Starting over a relationship...but had sex already

Me and my ex-girlfriend decided to give it another go. I made a move on her and we've been talking for 2 days or so. But the thing is when we first dated we waited for sex, and did it once over a 3 month span. The first time we hooked up we did it. I wanted to start over completely but its like we already had sex... what should I do. I wanna take it slow again. any advice?

 

I don't see how having sex means anything. I wouldn't think you could possibly start over completely since you already know each other somewhat well, I imagine.