All I can realistically say is RUN RUN RUN
Seriously.
Quietly AND quickly consult with an attorney as to how best get yourself out from under the house as well as ANY bills, utilities or anything else that YOUR name is legally connected to.
OMG sweetie I am truly so damn very sorry.
Your WS will NEVER change.
This IS who he IS & has been for many more yrs than you could possibly be aware of.
Sadly, my story is no different than anyone else's here.
And, sadly, I regret NOT leaving my now xh in mid 2000s, when I suspected he began screwing around with the creature that he ultimately & literally abandoned our marriage for.
Please DON'T be me - I stayed married several yrs too long to what's painfully clear was/is a narcopath serial cheater.
Such individuals are "hardwired" differently than most of those around them & it can easily be said because of this "hardwiring" difference that, physiologically, they're irreparably damaged & will alternately figure skate & steamroll through life & the hearts of those they're intimate with.
Nothing & I mean NOTHING is EVER *their* fault; even with mountains of absolutely irrefutable, impossible to dismiss evidence.
It's who AND what they are & more to the point, it's how they freely CHOOSE to be.
Your WS absolutely knows that he's hurt you & like I've painfully learned with my xh, he doesn't give a damn. PERIOD.
Quickly quietly consult with a divorce attorney.
Learn what YOUR rights, responsibilities & obligations are & just as quietly & quickly begin getting your ducks in a row.
Serve this serial cheating prick with divorce papers.
Tell him in ZERO UNCERTAIN language that if *he* has ANYTHING to say, simply attach your attorney's business card with the papers.
Then safely ghost this cheater like Recon Rick.
Let him be the next [narcissistic] supply/victim's problem.
Like other SI posters have shared, please DON'T wait until you're pregnant AND/OR have children with this guy.
Safely AND quickly get out from under YOUR half of the house sale & RUN FAR FAR AWAY from this guy.
He will only choose to continue figure skating through life being led by his dick & just as deliberately NOT caring that his behavior is exposing YOU as his betrayed spouse to some nasty AND potentially deadly STDs.
Please DON'T have sex with this guy.
Get a FULL STD panel & protect your health because your WS has painfully demonstrated that *he* does NOT care about even his own sexual health.
Due to my then husband secretly & repeatedly fucking his [then] equally married but later proven to be frighteningly promiscuous OW, a few short months before he ran off with her, I experienced the WORST yeast infection ever.
I'm now mid 40s & I can literally count all the yeast infections that I've EVER had since becoming sexually active as a young teenager.
I can count these times & YIs on one hand.
Please DON'T be me: I now live with the random physical discomfort & pain of untreated pelvic inflammatory disease.
Two yrs after my h literally abandoned our marriage for his precious OW, I had to have a hysterectomy.
I've been STD & HIV tested at least a half a dozen times since late 2011 mid 2012 & then a couple weeks before my hysterectomy in 2013.
I had small but treatable fibroids (hereditary) however, hysterectomy was recommended for the damage, swelling & pain due to PID - definitely courtesy of my husband repeatedly fucking the town bicycle WITHOUT protection.
The gynecological specialist that oversaw my hysterectomy said that it's possible for me to experience PID symptoms even years AFTER my surgery.
Had *I* really & truly knew that my husband had been secretly involved with AND was actively sexually pursuing the medically dirty walking petri dish known as the OW, I can say beyond doubt that I would've closed the [sexual] bakery months into years BEFORE the promiscuous & heavily pregnant OW sped down here to help whisk her still very much married bf away to their shiny new happy & mysteriously responsibility-free life in Lala Land.
Exactly *how* these two adulterous lovebirds were going to accomplish a responsibility-free life is still quite the head scratching mystery.
All I know is my husband ran off with his equally married AND heavily pregnant mistress.
And left *me* with approximately $87,000 in combined marital debt; the accumulation of months shy of 14 yrs school, dental & medical debt.
Theoretically, I could've afforded our apartment home on my own after my husband left, however, stbx's cruel words AND actions left me no choice BUT to divorce him AND move a few short months later.
I couldn't have ANY pets where I'd be living for a few months afterwards & I was forced to adopt our 4 cats out to a farm family; someone my mom was acquainted with.
Leaving my/our 4 cats on this farm lady's doorstep was one of the hardest things I'd experienced in recent memory.
To this day, I still sometimes
whenever I remember being forced to leave my furbabies.
I sometimes feel like this hurts as much if not more than how xh decided to leave our marriage.
It's worth sharing that prior to me beginning the
legal process of divorcing my h that I'd honestly NEVER heard the terms Narcissistic Personality Disorder or the term Serial Cheater.
I still remember asking 1 of the family law attorneys I spoke with who talks to their spouse the way stbx spoke to AND treated me.
Attorney replied "Oh that's easy. I'll tell you who. A selfish douchebag. That's who. Sadly, I see that daily & all the time."
I stood there in the office hallway, clutching the beginnings of my divorce paperwork & through a few tears, graciously thanked this attorney for the legal advice necessary for me to finally begin legally cutting myself free from the monster known as my stbx.
The ONLY thing I can now say is that my [Ex] spoke to AND treated me, his wife, in ways that most mentally & emotionally healthy individuals wouldn't think to speak to or treat an animal.
Seriously.
I now take little comfort & "consolation" in knowing through several months of long overdue PTSD therapy that if I thought xh treated me badly, awfully or even horribly, well, it'd be 2 solid yrs AFTER I divorced xh that I'd learn the ugly truth about my husband & the vile thing known as his soulmate schmoopie OW.
R U N R U N R U N
FAR FAR FAR AWAY FROM your cheating husband.
He will NEVER change & he will NEVER STOP neither lying NOR fucking around.
A mere 4 MONTHS into ya'll's marriage & he's already sticking it elsewhere?!?
It genuinely pains me to say this, but, sweetie, this ain't his first rodeo.
He's likely been lying & unfaithful to you the ENTIRE length of your relationship.
He's NEVER learned to be ALONE & he's NEVER learned to be faithful to himself much less a significant other.
Throw your marriage to this guy where it belongs - in the garbage outside & ghost him BEFORE he's even aware that he has divorce papers in his hands.
Let him be the next supply's problem & heartbreak.
Lots of virtual ((hugs)) from someone whose definitely been there & dealt with it.