I had this problem with my XH, he woudln't even hold DD till she was over a year old.

He would even say to her "I hate you".

It wasn't a success story, in his case he had huge issues and he also was too young I think. She's 7 now and he shows only very faint interest, rings her once a month or often goes longer.

19 is very young for a man to be having a baby and I guess in a way it's not hugely surprising that your DP is having issues. I don't know what to suggest, in my case there was alot of contributing factors and I ended up leaving. I'd daresay it's his age that is the biggest problem at the moment, a good lot of men are unable to just feel fatherly so young and I just hope that it improves with his age and with time.

((huge hugs)) I know how it feels and it is truly heartbreaking.