I just came into contact with a hook-up from my past. She's an HB7 and we used to have sex annually between my relationships for years. She contacted me after I sent her a message on FB.
I told her that I hope she doesn't think I just view her solely as a hook-up. I also told her that the only reason I never called her more often was because I felt like I was taking advantage. Not the strongest grounds to begin on, but I felt it necessary after our previous experiences so I can regain her trust. Otherwise, she would have thought that I just want to have sex with her again and just be turned off (but it's pretty much the truth).
She messaged me back saying that she was surprised I felt the way I did, but to not worry about it because things happen for a reason and she enjoyed herself. She also said that she was going into the army soon and that she'd like to have dinner with me

. I haven't sent her back a message yet because it took her a while so I'm going to wait until tomorrow.
I was wondering if anyone knew how I can regain her trust after years of just sex and little interaction?
At least enough to where I can sleep with her again. In the past, it was as easy as "hey, follow me into the room," but that's when we were young. We are different people now and she isn't going to give it up that easy anymore.
She did message me back and said that she enjoyed the sex so that's a big indicator that she might still be for it. But if I want to get her again, this time I'm going to have to do it the real way. No fool's mate.
I could just move on but I am really attracted to this girl sexually. She isn't the most attractive girl I've slept with, but she's the best sex I've ever had. She is tall with deep, dark skin and ample in all the right places. Specially her big ass that she likes to whirl around when she's on top.