Falling back into bad habits

So I used to mess with this guy. we stopped talking for a while. We just weren’t good for eachother. I was always worried about him. He was always worried about me. I cared for him deeply tho. Time went by and I met a new guy. He takes me out, not no let’s chill type stuff. Only time that happened was when he went and got a hotel room rented a whole bunch of movies from red box and got me snacks and cuddles with me because I was on my period and felt horrible. We’ve had sex 3 times. I️t was amazing. He surprised me with this natural hair stuff that I kept saying was to expensive. He’s amazing, I really want to get to know him more and build something with him. It’s only been a month and a half since I met the new guy. Now old guy wants to come back and do all the things he didn’t do. Old guy used to be a scrub, and then turn around and be with someone else. I do care for old guy deeply, but I want to make a new connection with this new guy. I feel like I️m falling back into bad habits. I️m being stupid. How should I tell old guy? How should I go about this?