Replying to Advice for keeping things friends vs. relationship?

So this guy I've been hooking up with for the last couple weeks. He was all about being friends with benefits. I'm totally cool with that, it's perfect for the moment. Anyway he was texting me a bunch and then last night was really all about it. Was telling me all this stuff, showing me stupid instagram pictures. Said something about something if I lived with him. Looking up our signs and horoscopes or whatever and this and that.

Idk. He's cool enough, it's convenient, but I'm not into him like that. Any advice on keeping things mellow? Or should I just run away?

What do you do in these situations? We live in the same building too.