DS is 3.3. For all the time he remembers, the two of us have lived here; we spent the first year of his life living at my parents, he still goes there regularly, but obviously doesn't remember living there.
ExP has recently moved into a three bed house, he previously lived in a one bed flat that was not child friendly in the slightest. It was never an option for him to have DS over night until he moved into his new place.
DS has been to play at exP's house several times, is happy going there to play with his toys, feed the fish, knows he has a room there. In the last two weeks exP has finally sorted out furniture for DS's room, so there is now a bed / bookcase in there.
ExP suggested to DS on the phone the other night that he stayed over this weekend, to which DS replied that he'd come and play, but wanted to sleep here. I spoke to him about it again today, asking if he'd like to, and he burst into tears and said that he didn't want to go, because he would miss me too much. He has only spent a handful of nights away from me before, once under six months old, and then maybe four in the last year due to health reasons - two of which my mum stayed here with him, and, in the last couple of weeks, two more where he had a sleep over at my mums house. I had an operation three weeks ago.
Neither exP nor I drive, and he lives over an hour away by bus. DS is testing and much more 'mummyfied' than he normally is at the moment. Because of all of this combined, I am reluctant to make DS do something I know will make him unhappy, because in the long run it will just make it more traumatic for everyone if we do it before he is ready.
ExP is excited about having him to stay over, though I do believe the novelty will wear off for him pretty quickly. Obviously haven't said this. He's now pissed off because when DS got upset when talking about it, I told him it was fine, and he didn't have to do it right now if he didn't want to, that he could just go and play for the day, then come back here.
AIBU here? If he lived ten minutes drive away, then it would probably be a different matter. I don't want to disrupt DS any more than he has been over the last few weeks, and don't want to push him to do something that he isn't ready to do.