(((Alex)))It does feel horrible, even when it's the right thing to do.
Even when you've been placed in an untenable position, with the person who's supposed to be your partner, the one who is supposed to love you the most and place you above all others, chooses to place YOU in the position of doing HIS dirty work: ending a marriage he, really, already left, it hurts like hell.
And when YOU feel responsible for the end of the relationship, it feels even worse.
Thing is, you didn't end it. He ended it the moment he touched another woman. And he knew that. He chose to do so anyway. Maybe he figured you'd stay. Maybe he figured he'd engage in a game of chicken with you, daring you to end it, but believing you would not.
To this day, my husband insists I ended our marriage. We've been separated for over 3 years, after YEARS of infidelity and lies. But it's somehow easier for him to believe I ended it. Whatever. It ended the first time he walked into a strip club, really. Because even though that predates me kicking him out by a good couple of decades, that's when he left the marriage.
Alex, your husband did the same. He left the marriage already.
YOU did not end the relationship.
He did. With his decision to cheat.
Nevertheless, I completely understand the sense of responsibility.
Don't buy what he's selling. This is not your first experience with infidelity. That, in and of itself, tells you how seriously your husband takes you, takes marriage at this point.
But remember: no decision you make, really, is irrevocable. If at some time in the future your husband chooses to step up to the plate, and take REAL action to become a safe and trustworthy partner--there is NOTHING to prevent you from re-establishing ties and working to create a new, healthy relationship. Then again, there is nothing that requires this of you; if you've reached your breaking point, that's okay, too. That he chose to place you in this horrendous position is ...well, all on him.
HE made the mistake, Alex. You are doing the only sensible thing to do in your situation: protecting yourself, keeping yourself safe, learning that you CAN live without his chaos (and that, likely, you prefer this to the walking on eggshells living with a cheater requires).
This isn't about your marital issues, or your happiness. It's about his brokenness.
If and when he chooses to address this, you can reevaluate your decision.
In the meantime, yes--it sucks. Family and business do suffer.
What sucks the most is that the person who was supposed to be your partner in all of this CHOSE IT FOR YOU.
Please be gentle with yourself. Start by removing the responsibility for the end of the marriage from your shoulders.
Then, on a more basic level, make sure you are eating well, exercising each day, getting enough fluid, and getting as much rest as you can. These things help.