This patient support community is for discussions relating to activities and sports, balancing schedules, divorced or separated fathers, discipline and behavior, home-schooling, military fathers, legal issues, new fathers, religious issues, special needs fathers, stay-at-home dads, and stepfathers.
Also, playing with girls is fine, as long as he does have a few male friends.
Also, don't force your son into sports. Speaking from experience, I probably "hated" my parents from grades 4-8 because they forced me to play sports. Looking back, it really pushed me away from them and the team itself, because I would purposely be a "bad" player to spite them. While I acknowledge that sports do have excellent teamwork building skills, it's not the only place to learn them. Disliking or not being involved with sports doesn't make you gay.
"I love you" has a lot of different meanings. He might have just become close friends with that boy at camp. If he really is romantically and/or sexually attracted to him, don't be freaked out and certainly don't punish him or make him ashamed of his feelings. He might ultimately become straight after puberty, but if he does turn out to be gay, you'll just have to deal with that. No matter what his orientation is, he's your son and you should always continue loving and supporting him.