Can this be fixed or should I just quit trying

I'm married with 2 kids. My husband has been battling cancer for the past year and I've been having to take care of him and keep everything going. It's been particularly hard for the past 2 months because he also suffers from bi-polar disorder and his medications haven't been working at all so he's been depressed and suicidal. I've tried to be very patient because I understand that mental illness is as real of an illness as his cancer was. We haven't gotten to go out together at all in the past year, because even when he's feeling well we can't afford it. He's always had a lower sex drive than me, and our sex life is bad. I'm lucky if we have it once a month. The problem is that I recently discovered that he's posting on craigslist trying to hook up with other women. I don't know whether to try to work things out or just dump him. I've been a stay at home mom for 6 years and I don't have any savings or any marketable skills, which is what is giving me pause about just rushing out of this. I want what's best for my kids, and I feel like we can probably work things out, but I would have a hard time trusting him. I have no friends or support system in real life so I just don't know where to turn.

now about your problem,i can understand it,i,ve been on both side of the fence.smokeing herb may help him with a lot of problems,i know the feeling on being married and no sex.you get tired of doing your self.first is how is the money comeing in..sometimes two can play that game.because walking away right now isn,t right.even if you want to.so my anwser is play also if you really thank he is.it,s not right neither is his behavior

I can really understand why you would feel angry and betrayed by this. Also exhausted probably. But I think, because of the children, you need to try everything first. Get a babysitter and some couples therapy. It\'s expensive but keep in mind that divorce is more expensive. In the meantime, build up your external support. You\'ll need it whether you divorce or not. Study something maybe or get a part-ttime job. Catch up with friends.