I Like it when My girl Kisses me or hugs me while we are out and about or just hanging out at home, With or without my friends around. as long as we are not talking about a long "make-out" session or something like that.
I think doing stuff like that can make a relationship a little stronger because your showing each other that you like each other. Now the only thing that would change this is if one of my friends came to me and said that I/We were making them uncomfortable by doing that in front of them. I would then tell them that we will tone it down when they are around. but make it clear that it will not stop, but just toned down so they are not uncomfortable.
No. a guy shouldn't have a problem with this unless the girls is all over him or hanging onto him the whole time with his friends. But otherwise it's fine.