This is my first time on this forum so I'll keep it quick.

This is about my girlfriend she constantly uses things and blackmails me to stay with her when I say I'm not ready. She'll say things like what if I don't come back to you. What if you die and we can't be together. By the way I took the worst approach with this girl by telling her that, "I know your the one." "your the only girl for me." All that crap. Now I don't usually get into relationships, I never find a girl intriguing enough because it's more fun to mess around with multiple women and not have any commitments. Anyway this time I gave her a chance because she said she wanted to be in a relationship with me so recently I took her out on a little excursion and I'm 20 so I got an airbnb and payed for our meal while she paid for the tip. Mind you I recently got out of high school and she's still in high school. I don't feel like our relationship is going anywhere, she was just a girl I used to fuck in high school and I don't want to make her feel bad or just have her bashing me and making me seem like a bad guy to other women because I like to keep my options open. Can anyone help me? I feel like she's exploiting me, using me for my energy, and the only thing she can give me in return is her attention, she constantly says she wants to give her share but she's limited from doing so... Plus my dick burns... Help...