Am I sex crazed??

My boyfriend & I have been dating for 7 months now & I always want to have sex with him every time I come over. he started to deny me the past 3 months when I ask for sex , but would still have sex with me even if he says no. I literally have to beg him sometimes.

It started to have me feel insecure , so I had a talk with him. he told me when he denies me, it doesn't me he finds me any less attractive, but he denies me bc we have sex 'too much'. He gets mad at me when I tell him that I think it's bc he doesn't like me anymore.

He would tease and play around with me, then when I say I want to have sex, he stops & says no. He continually teases me & it makes me just want to have sex with him even more. I don't know why he denies me.

We do have sex alot, but it doesn't feel like he's into it anymore. I don't know if its me or him?