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. Would it too late to get back in contact now?