Pisces woman and Saggitarian man being intimate too soon

I'm a 20 yr old Pisces woman currently "seeing" this 26 yr old Saggitarian guy. I've only known this guy for a week and the sexual tension is CRAZY strong. He pursued me first and was very persistent. I could NOT deny his charm. I gave in and became intimate with him. The funny thing is IT'S ONLY BEEN A WEEK, yet it felt like we've known each other longer after conversing.

Here's the problem: as a Pisces, it is very natural in my nature to expect loyalty and have emotional demands after intimacy. I tried to draw the line between us before and after but it's just not permeating through his head. I wanted to establish an emotional connection first but didn't succeed. He promised that friendship was guaranteed and says he misses me, but it's SO hard to read him. I really wonder what his intentions are and if we'll work. I sometimes think that since the sexual chemistry is so strong it is the only solid ground that we have. Since he's emotionally distant I feel that I should give him a lot of space to roam freely and come back whenever he's ready. But I'll tell you one thing, I won't wait around. Why? Because 1)these guys like an independent woman with her own goal and priorities and 2)I have a life that doesn't revolve around him!