Introducing Kitten to Resident Cat?

My boyfriend and I have had our male tabby, Dublin, since he was a kitten for about 3 years now. He has been social with other cats when I have babysat friends' kittens. Now our roommate has brought over her cat who's not fixed yet and she's just under a year old. The introduction was a bit fast because we didn't have the space for secure rooms. But we did put Dublin in the bathroom and did the scent exchange while the new kitten was in the living room.

She's lived with cats in her old house and now it seems whenever my boyfriend or I try to pick him up all he does is growl at us and want down. They are now OK with each other in the same room and use each other's toys, but my house cat is not OK with sharing food yet. He hides in my bedroom most of the day until we have to pick him up and take him in the living room to try and socialize them. This is only day number two and I know it can take a month or two for eveyone to be a big happy family, I'm just wondering if we are moving too fast, if he's getting stressed out (he has before when we moved, he constantly was scratching and over licking) as well as when can I have my loving affectionate cat back?