My ex has always been a bit useless as a father since we split, he often disappears for up to a year at a time, this time however has been the longest time he hasn’t been involved (over 2 years) in march he got in contact asking to see them and to “help” me with them (at this point it was coming up to the 2 year mark) I was angry at him for how long he had disappeared and not bothered with the children and the kids weren’t bothered about seeing him so I told him what I felt and he didn’t respond. However since then a lot has happened and changed and now I’m thinking I should accept his “help” and get back in contact with him as things have changed since the last time we spoke. Aibu to get back in contact now?