What do i do? I dont think this should be so hard.?

So I have liked this girl for like 3 years. She is the girl who isnt just hot she is also so nice and cool to be around, but she does not like me for whatever reason. Now i still flirt with other girls cause im trying to get over her. but she always hints that things could happen. now i meet this girl who is kind of attractive and has 36 dds. (my first dd) but she is prude. do i try and work things out with her or do i stay stuck on the other girl?