Well the general consensus seems to be to talk to him honestly :P. Easier said than done. Though Red, you are right about the resentment building up. I can already tell it's affecting my feelings toward him. I will try broaching the topic when I see him this weekend. Wish me luck
In response to your question, he does show me affection as well. It's mostly low-key, like holding hands or rubbing. Usually he initiates it, but I personally try not to go beyond that because I don't know if it will nauseate people. This is just from a personal experience when two of my friends started dating :P. It quickly grew irritating. Around other friends though, we sometimes cuddle. I still am relatively new to the group and feeling things out.