Oh man, I hate this feeling what to do?

I am neither gay, nor straight, nor bi just for the record, I mostly like guys, with hetero tendencies. I am not a slut, but I always seem to go on a date, and I want a relationship, it's just when it actually becomes a reality i get scared and run away, I am so used to being single but i hate it, but i am comfortable that way too, after date one nothing bad happened it was a good date, but I feel done with the person, this feeling is intensified if we had sex.. I feel like a slut, I hate that i do that, I went on a date and this guy after we had sex is talking about how thinks it could work, i found it awkward but i tried not to make the situation awkward.. So I acted normal, said all the right neutral things, sort of like not confirming, nor denying whether it could work. Please help me! I also always feel guilty after sex as well, even though I don't when it is happening, and I have had it before, not many times, but a good amount of times. Peace!