It's not over

I would recommend that you watch Season 1 Episode 10 of Suits. 34 minutes and 30 seconds into the episode Rachel kisses Mike because she finally breaks down to the sexual tension.

It finally reached that point because Mike began dating someone else and Rachel slowly began to get jealous and turned the flirting up into overdrive.

Maybe you should try to make her jealous by dating somebody else? Preferably a girl that you've known for a while who was dating your pot-dealing best friend who turned out to be no good for her after all.