My XP has two DDs who I became quite close to (and fond of) whilst I was with him. I don't have any direct contact with them now as it doesn't seem fair to them to expect it. However, I have so far continued to send Christmas and birthday cards and presents from myself and DS (their half-brother). After last Christmas I asked XP to take over doing this (ie buying presents for them from our DS) purely because I can't really afford to do it.
I feel a bit guilty/sad about this though - was I right to stop?
How do others handle relationships with former DSCs?