As per advice posting here: I don't know whether to give a long or short version... The short one is that I just found out by accident that my husband (of 25yrs) has been having an affair for a year with a woman overseas (not from his work but he travels there few times a year). I've been struggling with cancer for 7 years now (it returned again a couple of years ago and they've told me that it's terminal but no finite time - for now my meds work). I would leave him regardless but our DS has been struggling with depression for a few years. We finally found the right meds for him and for the last month he's the best he's been for a very long time. I can't show at all how I feel because I'm scared that it will tip our DS over the edge. I feel so helpless and resentful but can't see a way past this...