I've had a girlfriend for almost a year now--it would be a year if I asked her out sooner but I put it off since I didn't really like her that much. I still don't. Only putting up with her because I am VERY fond of her lesbian little sister. At first I fucking hated her but gradually fell in love. The two of us are kinda close. I kiss her once in a while and casually looked at her vagina while my girlfriend sat next to me. Still unsure if she's really interested in me since she has a preference for girls. Either way I can't shake my feelings for her. She's the last thing on my mind when I fall asleep and the first thing I think of when I wake up. Everyday I look forward to seeing her and hate every second she isn't around.

What the fuck do I do?