I don't know whether to say anything about this or not? My ex doesn't see our children and it's been almost a year, he basically just stopped making an effort kept promising to come down then not showing up. The children decided they didn't want contact with him anymore as he kept messing them around and making promises to take them to places then cancelling the night before or just not turning up at all. They are teens so old enough to make the decision and no court order or anything so I left them to it and they both blocked him. We hadn't heard from him since then not even at Xmas, he texted me the other day saying to tell them if they ever wants to know him is always available to them if they ever want contact. I mentioned it to them and my son said he should have blocked him ages ago. I don't know whether to say anything to my ex like when he is ready to be a proper parent and see them regularly and stop letting them down then he should make contact or should I just leave it and not respond?