<human>: I'll try to be brief. I've been married ~1.5 years. We've been together for ~3. My wife is significantly younger, and we were engaged after dating only a few months as my wife was entering the air force. We both were happy with where we were at, wanted to be together and pulled the trigger.

Skipping the majority of details, she cheated on me about a year ago while off at training for the AF. I felt a little pressured, wasn't happy with the situation, and while I did agree at the time (described as an open relationship) I was not totally comfortable. Maybe that was my first mistake, I don't know. Anyway, we talked, decided against continuing that. ~9 months ago she cheated with the same person who happened to end up at the same base while I was out of town. I was crushed. I actually found out about it ahead of time & caught her in the act, but that's less important now.

Over the past 9 months, we've gone to two therapists, one whom she hated and another whom we have not seen any results from. I have given her ultimatums but she has continued to press the boundaries - talking inappropriately, etc. She swears nothing has happened in awhile, and while I have enough confidence to believe her, I don't know if things can go back to being how they were before. We constantly fight and just plain don't get along.

I don't want to be alone, and neither does she. When she's genuine, she's a great person to be around. She's very strong, intelligent and down to earth. I tend to be more out there, laid back and mature (I know, the age has something to do with it). At this point though, I'm stuck; do I continue to try to fix things, and how do I do that when it feels like we've tried everything? Do I call it quits, and not only crush her but also hurt myself in the process? How long do I keep working at this, and when do I know if it's over or if this is something that working through will bring us to where we want to be?

Can you give me the gist of the text in a nutshell?
<bot>: Wife cheated, having trouble getting over it, bad relationship since then - can I fix it, if so how, and if not when do I kill it?