Clearly u need to move on . Its natural to feel hurt when u get rejected, but still spending 9 months thinking about one girl is a bit too much and kinda bad for ur confidence as well. This might also stop u from meeting new people as u wont want to experience this sort of pain again.
So u need to move on and meet new people. If u feel the night club scene is not for u, i am sure there are lots of other ways to meet women . They are virtually everywhere

. Joining some clubs might be a gd start, cooking or salsa lessons.
The only way u are going to get over her is by filling ur life with other pursuits ( including other women)

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