I can't figure this guy out

So I reconnected with this high school friend about 6 months ago he found me on Instagram and we went out for some drinks.. we hung out a couple more times he took me around his friends and thought it was going pretty good .. then all of a sudden he would ask me if I wanted to hang out and would always leave me hanging (this would happen at least 3 times a week💔) but then the times we would hang out he would just park around the corner of my house and we would just talk and eventually we had sex  but now that's all we do, park, talk and have sex like wtf!! It makes me feel like I'm a nobody to him, but for some reason I just can't seem to end this little thing we have going on I find myself always responding to his text! ☹️