My H and I split at the end of November last year for lots of different reasons, this thread describes some of them www.mumsnet.com/Talk/relationships/4079211-Sexism-feeling-downtrodden-by-my-mum-and-DH As well as this I also discovered he was on various dating sites (including paid ones which he paid from our joint account) messaging other women.
He has had a girlfriend for about 4 months now. Our DC are 3 and 6 and he has them EOW. He occasionally comes over during the week in the evening to see them but can easily go 10 days or so without seeing them.
He can go days and days without contacting me/asking how the DC are etc but when he does it's often not to do with the DC - he'll often ring me to tell me about his day, rant about work etc. I always answer the phone in case he is asking to see the boys that evening. He talks as if we are still together and says he misses me etc. His contact and interest with the DC has dropped since he got into the new relationship. I'm assuming he doesn't go 10 days without seeing her yet he claims to be too tired to come and see his children in the evening.
I feel like I'm in a love triangle tbh. I'm fed up of it. He can be nice when it suits him. I have found the whole thing extremely difficult, hopefully this goes without saying. He's actually very selfish and doesn't consider how his actions impact me and us, even though most people think he is the nicest person in the world. Lots of people say to me I'm doing amazing on my own and coped well with him being with someone else but I don't have a choice. i feel like the whole thing is really toxic and i don't know what to do, because i can't just stop contacting him.