UGH!!I'm so mad right now...my bf's been putting up a front this howl time and I need your opinions?

My bf has been putting up a front this howl time! I'm 3 years younger than him(I'm 13 he's 16)Every time I would flirt with him he would just be like "what?I don't get it" and then every time I would talk to him about sex/aids/drugs and you know just things like that(not about doing any of it just his opinion on it) he'd be like "your way to young to talk about that, do you even know what that means?" He even pretended he didn't know what aids were...and after a while of him saying I'm way to young to talk about things like that I got mad and said "Well if I'm too young to know about those kinda things and you aren't then why are you dating me?!?" He was just like "Honestly I don't know" and then I said "You don't even know when I'm flirting with you!And you don't even know what aids are!!!" Then he said "Yeah well I kinda do I just don't act the same around you as I do to my ex girlfriends cause your my little sisters best friend and its like if you know about this stuff then my little sister is gonna know to." (that's kinda how I met him cause I'm his lil sisters best friend) "I wouldn't tell your little sister about the stuff we talk about in plus she's like 11 that would be weird...she gets mad at me for talking about you anyway" then he was like "can I tell you something?" and I just said sure and here's what he said "I act way different around my gf's normally that's kinda why after I asked if you wanted to "wrestle" I said never mind your to young to "wrestle" cause it reminds me of when I was with my ex gf and we started to "wrestle" and then we kinda started to make out and then we went a little far...so I haven't really shown you the real me" and I was like "WHAT?!" them I just started to think omg! He's not immature for his age he was just putting up a front!He knows everything that I know about sex he's just been pretending he doesn't! so I didn't talk for a while cause I was so shocked and suddenly he goes "are you mad at me?" and I'm just thinking DUR! but I'm like "um YEAH what do you think! Are you telling me you've been putting up a front this howl time!?" and he's like "well if that's what you wanna call it?Please don't be mad at me baby!Do you want me to do what I did with my other gf's Do you want me to act like my real self?" so I said "I don't know if I wanna know the real you" and he's like "Oh come on?!?Please forgive me!" then I said "Which you, the real you or the one you've been pretending to be?!?" and then I said that I had to go and he's like "FINE! I'll call you next Friday...maybe." so I said "Yeah and I probably wont answer!" Do you think I'm being to tuff on him?Or does he deserve it?

he's a jerk

You are way too young to be dating anyone. But no, you're not being too hard on him.