[QuickSilver]

I think a clicker is a great idea! Also, be sure you aren't projecting your own fears onto the doggy. Thor doesn't get very excited when I leave or come back, but I'm HAPPY about that because it means he doesn't have separation anxiety. He will excitedly great other people who are just uncles and aunts, but that's okay, because ultimately he comes back to MOMMY.

I would make sure that you are the one who feeds him as much as possible - maybe even give your friends a food that doesn't taste as good for them to feed when they are around. I'm sure they will understand you want to bond with your puppy.

Also, as people said, puppies can't resist play. If he's a little timid now, don't push. Maybe stand off to the side, and throw a toy away from both of you. I don't think there's a puppy in the world who can resist chasing a toy! Don't worry if he doesn't bring it back right away, let him stash it somewhere. I used to take a couple dozen rolled up socks and throw them down my hall one by one. Thor would go hide them somewhere and come back after a few minutes to get the next one.

Hope this helps, and I am SURE that with persistence and patience, he will grow to love you like no other. Dogs are built for this.