What To Do, What To Do?

I understand a lot of things.  I understand how she feels about a lot of things, based upon things I have done or not done.  I can't say I like them.  And I don't care what else goes on - but I'm not going to sit here and be walked all over and have her fucking other guys while paying me little or no attention.  It's as simple as that and not up for negotiation.  If it keeps happening, especially if I take care of some business, I'm just going to be gone one day with little to no notice.  It's as simple as that.  I don't even know if I want to stay at all anymore.  I feel...somewhat obligated.  If nothing else, for Todd's sake and/or to right the various wrongs I have done.  I can't say that I care for her attitude whatsoever, but it matters little what I think right now and that's the bottom line.  I don't know that the damage that has been done can ever be repaired.  At this moment, I seriously have my doubts.  It could be time just to come up with an exit strategy.  I know what I've done and what I accept responsibility far - but in my mind, she's more than made up for that and then some.  If I had options, I probably would leave.