What should I do?? Get revenge or...?

[I am human]

So there is this guy who I've known for 7 years. We went out a few times before but we just remained friends. It wasn't until last month that we really started talking again and he kept saying how he wanted to hang out with me. One night, he sent me his NUDES and was saying all the dirty things he wanted to do with me / ie just being inappropriate. He'd call me 'love' 'sweetheart' and say how'd he want me to be his girlfriend while HE WAS STILL WITH HIS GIRLFRIEND. I confronted him about it before and he just said how they had broken up a few months ago so I was like ok whatever and after he sent me his nudes I stopped talking to him and ignored him. I mean, I'm only 15 I'm not into doing that kind of stuff. It wasn't until I went on Twitter that I found out the whole time he was with his GF and they had never broken up. I feel so mad and angry that he sees me as that type of girl and only sees me as something to toot it and boot it with. What should I do? I want to get revenge but I don't know how
He treats his gf like shit, too. He'll cuss her out ALL THE TIME and just explodes on her. And yet, she's still with him so I doubt this would affect her.

[Crazie_gurl]

just leave the dude alone!!!
he still sounds young...if i were u i wudd get freaked out and never talk to him again...something is clearly wrong with him

[Kyra]

my friend, that there is a PLAYER. they are awful creatures who only use u for se*x. if i were u id get as far away from him as possible. u should probably tell his gf about what he's doing (unless she's a slut then she might be ok with it ). if u really want revenge u could do something about him being a player, but i highly recommend u just get away from him because revenge causes more drama

[brooklyncutie13]

Revenge never does any good . It'll only make you feel good for the moment , but then you'll feel shitty . & in this situation , i don't think it's necessary yes , he lied to you , but all guys are tools . the most important thing is that you're a smart girl and you didn't fall for it . If anything , he made a fool out of himself . BUUUUUUUT If you really want to get revenge ... forward / show the nudes to his girlfriend . (: Good luck .

[Joey Da Man]

Tell the girl about it so she doesn't get played he's exposed and ur all set

[Pinche]

You might want revenge because what if he was doing the same things to more girls? So you should tell his girlfriend. Because why would she want a boyfriend that doesn't respect her enough not to cheat? So I prefer to do that, and if you don't want to do that so you should think about what revenge you want, but DON'T BLACKMAIL lol I don't know if I spelt it right Or don't do revenge.
~xoxo