Please help me!!! imaginary relationships and pushing guys away?

okay so i always see guys that im slightly attracted to and i always imagine what itd be like if we hooked up like with almost every guy its sooo weird n i dont know if its normal...

then when i actually get w these guys i end up having a great time the first couple of days then ill start noticing something i dont like and then ill just start pickin and pickin at them until i push them away whats wrong w me?

i feel like ill never have sex this way? let a lone a normal relationship

i dont know if its cus i just try to settle cus i dont wanna be lonely or if im just a hopeless romantic whos obsessed with fairytale love stories where everything is perfect

what do u guys think?