My DS will cling to his dad all the time. I have a few thoughts on why... One is that dad lets him get away with everything, there seems to be no limits which s#*ts me beyond words, and I work nights, so when DH gets home, i go off to work and am home after he is in bed. My theory here is Dad gets to have all the fun time with him. They go to the beach every arvo when its nice and cool, they play, he gets dinner bathed and bed. So their time is quite fun compared to our time - me getting housework done, getting dinner on and just the usual trials of everyday living as a housewife! I sometimes get upset that he wont come to me when Dad is around cos wen dad not there we have a beautiful relationship. So i can understand how your hubby might feel, cos it can be quite rejecting, But for me i think of the things I said above and can kinda understand it. I no this does not help you at all, but just thought I would share it anyway.

Good luck with the new arrival!