I definitely agree with this. Although that doesn't necessarily mean he would be comfortable with it, but as I was saying to some people at con-txt, I have this vision of him sitting around with Tony and Thor and Clint as they tell their stories of wild sex and drunken mishap, and going "Haven't done that, but had to retrieve Bucky from the middle of it... haven't done that, but Bucky did it while I was pretending to be asleep in the same room... haven't done that, but had to post bail after Bucky did that... haven't done that, but your dad destroyed half his lab while doing it and I had to dig through the discarded underwear to find my repaired body armor the next morning," etc.

(and then he and Pepper have a bonding session, of course.)