Ex hasn't been interested in or seen the children for months. He's missed birthdays, most access visits (arranged informally) doesn't phone or return calls.
However, a few days ago he has been calling frantically wanting to come for a day over Christmas (more so the day itself) to see the children saying that he has changed.
I've refused as I don't believe him and don't want him to ruin things. yet I still feel strangely guilty.
So aibu?