<human>: Can you condense the text into a few key points?

On a business trip, drank too much and responded to flirting of younger woman. Kissed her and nothing more but am now physically hurting with guilt. 

If I tell my wife she will end our 15 year marriage with three kids. There's no question about it. This is my first instance and I have never felt so overwhelmed with guilt and fear. She knows I'm off but attributes it to fatigue and work stress (which are both true). 

I want someone to give me a pass on this one, but I also know how absurdly selfish that is. I've been reading a lot of posts about trusting your partner to accept and forgive, but I also know that won't happen. If I tell her, there's no going back and our family is ruined. I'm not overstating that. 

Despite the pain and guilt and fear and loneliness, I can't justify ruining a family for an indiscretion. But will I ever be whole again?

So I'm going to swallow the guilt and try to rebuild. But I am not sure it can happen - I'm two days removed from the incident and am barely functional. 

I might want to seek a therapist but at the end of the day, if I get coached into disclosing, I know I can't, so how do I move on? 

All for a f*cking drunken kiss that, if I could do over, I would run away.
<bot>: Kissed a girl, wife will end it no question. Can't see past the pain and don't know what to do.