Incredible intense sex

Ok! So, recently I got back in contact with this guy I use to work with (that I had a major crush on) and at first I was going to slow play it. But then I just decided not to play it safe and go all out. I told myself that I would have 1 night of amazing sex and the next day that would be it. Well it's a week later and we've had sex everyday. I don't know what to do, he's like something straight outta my fantasy, he's tall, handsome, muscular/strong, with the best lips and the tastiest dick. He talks and has good conversation, he's smart and nice. And even with all that, something is telling me to back off. What should I do?