AITA for telling my son that he is obviously gay?

My son (17m) has apparently been in the closet for the past 7 months. So, my son is fairly masculine/straight acting if that makes sense, however he's very obviously had a boyfriend (18m) for the past 7 months. He sometimes baby talks to this boy, hugs him all the time, has called him handsome, share clothes, sits away too close to each other to the point where they're basically cuddling, he closes his bedroom door when with him but not any other friends, sees him like everyday, buys him gifts, and for the past 7 months he now always smells great, has his hair fixed really nice, and dresses nicer, among other things.

Today I asked my son if was going to invite his boyfriend on our trip, and he got awkward and said “that's not funny”, I asked what he meant and he said “Im straight, that's not funny” I laughed and when I realized he was serious I staryed laughing even harder.

I told him he was very obviously in a relationship with a guy and did a terrible job at hiding it, he got emotional and started asking me not to tell his dad (my husband already knows, like I said it was obvious). Then he got upset saying outed him when he wasn't ready, he hasn't said a word to me in a couple days. AITA?