Well I met this person on here a few months ago and helped me through some very tough times, specifically with my abusive father. I never ever do stuff like this but he seemed very genuine, and is popular around here too. Well anyways, lately he has been calling me pet names like "sweetie" and "darling" and it just doesn't sit well with me. He always tells me that I am the daughter he never had too. When I got my belly button pierced he asked me for a picture, which felt REALLY weird. Am I over reacting here?

He is in his 40s and I am 16.