Ok, not sure if I'm not BU or if hatred is clouding my judgement!
Ex has not lived with us since Xmas but we were still trying to make it work so would often be round at the flat.
Since the end of we've been officially broken up and I said he could have dd (8 months) whenever as long as I had notice.
Since then he's taken her out twice, for 2/3 hours. The rest of the night he comes round, plays with her and has a sleep (he works nights) I've asked him not to do this and just have more of a normal arrangement but he doesn't listen and I don't know what to do.
His friend has a similar arrangement where the ex stays every weekend so thinks its normal. 