2Rocky nailed it!
Chill...See her less, as your time and your seed should be valuable!
When you do see her you don't always have to sex her up. Get to know her more and teach her about yourself!
Pvssy, FWBs, Plates, Side-pieces, or whatever dudes like, are a lifelong obsession, so I'm not gonna pretend I don't know or understand how you're feeling or thinking!
Gentle persuasion and good natured self-respect will let you cop the finest females - But it's self-control that should be your top priority because that's what will improve your sexual prowess and let you keep 'em!
By being genteel and good natured you'll the show good breeding and good sense acquired thru refined self-respect, which will make them trust you and feel safe around you!
With self-control you're showing decency, fortitude, true masculinity and self-respect - So they should respect you also!
They must learn by your actions, conditioning, and word game that you don't need their pvssy because you have the ability to entertain a variety of desirable females whenever you choose to!
If she makes herself compliant and desirable enough by saying or showing she's worth the effort - You should too!
Then when you do decide to sex her up - Hit it like it owes you money!!!
Rinse & Repeat!