[NSFW] I Feel Ashamed

I don’t know if this is the right place to share it but here is what happened.So I’m 17 years old and I am gay.There is one friend of mine at school that I really have sexual attraction.When he is near me I feel so different.He is buff and avarege height and so attractive.We have been friends for 1 year now.Okay so here is what happened.Our school is open in the weekends for studying.So I invited him to study at the school and he accepted.We studied math and biology for a while.Then we discussed about tv shows and all that stuff.At that time there was very few people at the school and no one in our class.So I get this weird feeling about him.I started to talk dirty things like girls and sex(he is a very dirty person btw).I asked him what kind of porn you like etc etc.So he went to the toilet.I was so horny I can’t explain to you.I just wanted to try something with him.And I took a risk and went to the toilet.He was washing his hands.I got close to him and awkardly pointed at the stall.And he didn’t say anything.I was sweating and embaressed like hell.After few awkard seconds.He said “So you want to do it?”.I nod my head yes and we went to the stall.He unzipped his pants and I started to stroke it.After few minutes I got on my knees and I started to suck his penis.After 3 minutes we stopped and he left the toilet.I wanted to threw up it was so embarrasing.When I came back to the class he was gone.When I went home I cried like crazy and felt so bad.Yesterday I didn’t go to school because i felt really sick.When I go to the school today we didn’t talk at all.At one time we made eye contact and he quickly looked another way.I feel like shit what should I do?Should I talk to him?Please help me.Sorry for my english.