So this girl (22F) and I (28m) have a little history. She's my next door neighbour (big mistake, but is what it is now), and when I moved in 2 years ago we spent a good part of the first year hanging out all the time as friends. I had no interest in her whatsoever, or so I thought, until she got a boyfriend. I realized I actually liked her, and I made my intentions clear, but she was now in love with a guy and no longer down to hang with me.. So I disappeared and focused on myself. Fast forward 6 months, and she messages me out of the blue that she misses me and the i should bring her on a hot date... I reply with something funny and slightly sexual and she goes with it. Not 3 hours later I see her with another guy.. And proceed to hear her fuck other dudes (share walls) and see them together often (several guys). I was pretty damn hurt, so once again, disappeared.

Last week her cousins come to my door late at night drunk to tell me she's always had a crush on me, and was being a bitch and now wants me. I say I'm not interested but then she shows up pushes me inside and we proceed to have sex for the next 3 days. I reluctantly fell for her again, only to hear and see another dude leave her place not 24 hours after we last saw each other. I'm actually devastated, and I don't know what to do, I've never been played like this. I haven't contacted her, as I know she owed me no exclusivity. I'm just hurt, and don't know the best approach right now. I want to ghost, but I also read some of people's stories on how this is kind of standard for when people begin seeing each other... That other people are in the mix and there's a dance involved. I worry I was maybe inadequate in bed, and have a whole bunch of feelings of self-worth attached to this situation. I just want some advice on these feelings and maybe the best move right now to continue seeing her without looking needy and too attached. Thanks