I've name changed for this, as it's very personal.
I didn't know where to post this, and I don't even really know what I'm hoping anyone can say to me. I feel like this is driving me mad, and it's probably not even my business...
Basically, my sister is cheating on her husband (she has been pursuing a man and eventually 'got' him, as far as I can tell from what she's said to me). I abhor cheating, who doesn't, but what's worse is that she is also actively trying to conceive with her husband!? They already have one DS and without going into too much detail, they are not the most amazing parents and both seem to resent having to look after him. It is all quite strange, and quite strained. She has basically said that if she didn't have DS she would leave DH, but I'm not sure how true this is. They discuss divorcing every few months but then make up and muddle along for a bit longer. It's a horrible cycle.
She has told me about the cheating, this is not the first man it has happened with. She doesn't feel any remorse, and seems to blame her husband for not making her feel attractive. But she also tells other people that they will try for another baby soon. She is so irresponsible and needs constant support from my parents, in terms of money, emotional support, childcare for her and DH to go on holiday! Another baby will just mean more demands on them. It is getting too much for me to bear, and I don't know what to do. I don't want to cut her off because she is my sister, but I don't know how I'll handle it if/when she announces she is pregnant. I am so angry with her for behaving like this. I wish she would just grow up. I feel sorry in advance for the poor children caught in the middle of such a mess. I genuinely think I am more anxious about it all than she is, I can just see it all going so horribly wrong.
Sorry, rant over. Should I just try and keep out of it all?!