my ex is now my fuck buddy 😅

long story short, I used to date my current fuck buddy this time last year for about 2 months. we stopped seeing each other after 3 months but we were still very close. we decided to officially end our "friendship" 3 months after we initially broke up because we just werent feeling it . Now a year later I started dating another guy that went on for 4 months and i broke up with him due to distance. a couple days before me and the second guy broke up. me and my first ex got into contact again where I told him to fuck off 😂 a week later I offered to be fuck buddies since a girl needed some action!! so me and my first ex have been fucking for over a month and I've caught feelings for him again. I hold him dearly in my heart but I think too dearly. we talk every single day every minute of the day and it's getting a bit overwhelming. we act like a couple , like love birds, going on dates. going out for lunch and dinner, movies yet whereas would like to start over again and become a couple, he says he'd rather stay as it. We are only having sex with each other so there no other peoples, also I'm going to uni and he's going to join the RAF both in 6 months. I Dont know if i can continue being buddies anymore, I want a real relationship, even though nothing changes the whole feeling on being together does. And if he doesn't then I don't think we should see each other anymore. Any suggestions???