Need advice

So I've been talking to a new guy and he tells me all the time that he likes me but always tells me not to fall in love with him (I like him alot, i don't love him though). Neither of us are ready for a relationship (or to fall in love) since we both recently got out of a relationship. We spend alot of time together and are always together. But on nights when im not with him he goes out drinking with other girls. He's made it very clear that we're just friends but i hate knowing he's with other girls. I don't want a relationship (yet) but i don't like him seeing other people (is that something i just have to get over?). For me he's the only one i talk to. Any advice? Anything will help thanks.