I must say, I like that "AND".
Yeah, it's disappointing, and nobody wants to go through a breakup (permanent or temporary), but it sounds like your instincts are telling you this is the right thing to do. As long as you aren't doing it as a way to force the issue, but rather doing it for your own (and your son's) well-being, I'd move out.
Do you have a plan for where you can go?