3timeloser: First I want to say that I'm truly so very sorry that you're here but you'll find much needed wonderful emotional support & advice.
Second, I want to say please safely, quickly & quietly begin consulting with a divorce attorney that understands AND has training in dealing with narcissists & high conflict divorce.
Learn what YOUR legal rights, responsibilities & obligations are & then just as safely, quickly & quietly begin getting YOUR name out from under ANY obligations that have neither YOUR name NOR the name(s) of your child[ren].
Ask what, if any, rights, responsibilities & obligations that YOU may or may NOT have with regards to HIS minor children.
Me, personally, I'd be blowing up his ex's phone with texts & calls to either come & get her/their FIVE children OR you AND/OR your attorney absolutely WILL be making an emergency call to state child protective services.
Sweetie, as another member just said, your H is out having fun, "watering" another woman/other womens "gardens" & YOU, 3timeloser, are paying for it in EVERY way imaginable: Emotionally. Verbally. Mentally. Spiritually. And very likely financially as well.
All on top of looking after HIS 5 kids as well as your own!
Whatever legal advice you're given I'm sure will determine how you will deal with HIS kids.
Me, personally, I'm serious as cancer when I say that I'd be blowing up these kids mothers phone(s) with texts & calls; telling the mother(s) either they come & get their kid(s) & step up their parenting responsibilities or a judge will determine if state child protective services needs to intervene.
Point blank, your H has flippantly pawned *his* FIVE kids off onto YOU which takes time, resources, money & emotional availability AWAY FROM *your* kid(s) - all while he's out working & just as likely fucking around & doing so with MULTIPLE OW.
Bc of ^^this^^ right here, I STRONGLY urge YOU to NOT have sex with this man; even WITH protection.
As awful as it is, it's vital that you get STD testing ASAP bc your H is showing you who he REALLY is.
He's showing that he has little regard for his own sexual health & safety much less yours as his wife.
I guess this is the best I can say & the best painfully learned advice that I can offer.
Personally, I'd quickly quietly get my legal ducks in a row, put all important documents & kid stuff in a safe unknown to your H location...& I'd just as quickly & quietly begin determining what is & isn't worth putting in a secure storage locker that H doesn't know about.
Your H is exactly like my ex.
He's a serial cheater.
You, as the BS, absolutely did NOT create the epic hot mess of a man.
You, as the BS, did NOT cause or "make" him lie, cheat, disrespect, blame shift & certainly you did NOT "make" *him* REPEATEDLY JEOPARDIZE *YOUR* health & even LIFE due to his numerous, overlapping, consecutive, concurrent or whatever affairs, flings, ONSs, etc.
Chances are that at least a couple of his OWs know about the existence of each other &or other OW & they're ok on some level with this kind of sickness & danger to health & for a myriad of reasons, these OW just don't seem to care.
I STRONGLY suspect that I experienced this with a couple of ex's OWs: There's little doubt in my mind that these particular ow did NOT know about each other; just based on stuff I both secretly overheard as well as what I saw in the months into years after divorcing ex.
I still occasionally run into one suspected OW that I know xh chased after.
In fact this particular OW even asked about xh & by the time she'd inquired about xh, I was more than happy to both tell her where I last knew xh to be as well as I told her EXACTLY where online to look up ex's 3 felony INTENTIONAL child abuse charges.
I DIDN'T want &or need this OW thinking that I was the classic bitter ex wife who just couldn't/wouldn't let go.
Nope.
If this particular OW, several years later, is still spreading herself around like I've always suspected, I figure I'll have at least spoke my piece & happily directed OW to precisely where she can see for herself just what a not so great catch xh was.
My gut says this OW that I still sometimes run into is still interested in my xh & now she absolutely CANNOT say that she DOESN'T know who & WHAT she is actively & freely deciding & choosing to potentially involve herself with.
Beyond my showing OW where to specifically look for & read about xh's three felony child abuse charges, as so many around SI.com like to say "Not my monkeys not my circus."
I guess what I'm trying to say, through my painful experience & surviving divorcing an absolute narcopath xh, it's my personal opinion & advice that YOU get your kid(s) to a safe location, get all your documents & personal belongings gathered, hand your serial cheating H divorce papers & ghost his ass BEFORE he's even aware of what he's holding.
If your H has ANYTHING, good bad or ugly to say, DON'T engage with him.
Simply attach your attorney's business card to the divorce papers & coolly tell WH that whatever he has to say he can talk to your attorney.
Then you exit as safely & quickly as possible & once you decide to get the divorce ball rolling, BLOCK wh on ANY &or ALL social media & other online places.
Tell wh that unless whatever he has to say is about the kid(s) AND/OR finances, YOU have NOTHING MORE to neither say nor discuss & then you disengage from the conversation & physically distance yourself.
I still DON'T understand "why" individuals such as our various partners & ex partners even bother with claiming they want an exclusive relationship & I certainly can't wrap my brain around "why" serial cheaters of either sex get married, freely exchange either religious vows &or just as willingly sign legal paperwork stating that they enter into "x" relationship freely & of their own will - especially when serial cheaters absolutely KNOW that they have ZERO intention, whatsoever, of EVER being neither exclusive NOR faithful.
3timeloser...please, for YOUR own sanity AND safety & even those of your child[ren], seriously, just serve your WH with divorce papers & call it done.
He is NOT going to change.
EVER.
He WILL emotionally & spiritually drag YOU down..until you are but a shell of your former self.
Please BELIEVE me.
No one doubts that you truly love your WH & desperately want your marriage to work.
But, like me & all of us here @ SI.com, you are only one person & half of your marriage.
No amount of loving this man or jumping through metaphorical or even REAL flaming hoops will "make" him love or even respect you "enough" for him to decide & choose to STOP LYING, get checked for STDs & SERIOUSLY mentally & spiritually get to the bottom of "why" he thinks so little of himself & his marriage that he's infinitely more interested in going through life being led by his dick versus stepping up, deciding & actively choosing to be a man of some semblance of integrity AND a decent providing loving father to his fairly large brood of children.
Nope.
I've learned that revenge ISN'T a dish best served cold...but rather revenge IS ghosting a deliberately deceitful reckless man-child & moving forward in life wholly WITHOUT a reckless disease carrying adulterous spouse weighing me & my child[ren] down & putting our lives in danger.
This is just *my* advice & perspective from my own painful experience.
Please take it for whatever you feel it's worth.
Beyond this, welcome to the very best "club" that no one willingly joins. ((hugs))