AITA for being upset over a prank that went too far?

I (16 male) recently got a random dm from a guy one of my friends was talking too. This guy has always seemed super nice, and I was confused why he was texting me. Anyways he was looking for help on if he should ask my friend (15 female) out. I gave him honest advice, and proceeded to tell my friend that he was dming me. My friend started to go on FaceTimes with him and I think things were going pretty well. All of the sudden the guy told me he was freaking out and said things weren’t going well. I told him not to worry because he seemed to be a good guy and I’m sure everything would go ok. The guy then proceeded to hit on me, and said “if things don’t go well with your friend maybe me and u can try something” he then told me he was bi and I told him that I was honored he came out to me, but I simply didn’t think it was appropriate to hit on me while he was waiting for a response on if he would be in a relationship with a life long friend of mine. He told me he understood but not to tell my friend because he wasn’t ready to come out to her. As a gay guy I understood this l, and proceeded to ask my other friend (15 female) for advice. My friend told me that it was probably a joke and when I told her I didn’t think it was she just didn’t seem to care. After that I checked back on the conversation with the guy and he said that he was just pranking me because some of his friends told him to prank me. I wasn’t hurt by the fact that he lied about being gay and what not because I am unfortunately used to people like that, I was more hurt by the fact that this guy thought it was funny to pretend to hit on someone while trying to be in a relationship with someone else. I ended up trying to talk to both of my friends about this and they both told me the same thing, “it’s not that deep”, and “your over dramatic”, which I thought was unfair. They basically told me I didn’t have the right to be mad about something because at the end of the day it was “just a prank” but honestly the prank went to far and it was too hurtful, so was I the asshole for genuinely being upset?