Is my crush using me?

We've known each other for 4-5 months. We are so close rn. He said that he likes me & I said i like him too. We act like a couple. When I brought up a relationship topic he said that he's confused with himself bc he has been hurt pretty bad in the past & dont wanna hurt me & dont wanna lose me. He also said 'even if we start a relationship rn it would last for a month bc i would probably start ignoring u, i can't help it'. He's treating me like his girlfriend but still seeing other girls while I cut off every guy that comes around. Every time I see some girl on his snapchat or on his phone Im asking about it. Also sometimes he seems so distant through messages but every time we meet its amazing. I don't know what to do really... I dont wanna anyone to take my place... What if he'll find someone better than me? HEEELP!!!
Is my crush using me?
Post Opinion