eat some lemons and hope an answer will cum.
nobody gives a shit
It actually depends on you if you're gay or not. You say that you don't hate it when you kiss and also you say that you love her. Just having sex with a girl doesn't confirm that you're a lesbian. You can say that you're actually asexual (on the account that you really don't have any sexual attractions in people).
Being a lesbian is all about feelings and of course attraction to the same sex. If you really do love her, maybe you guys can go into a platonic relationship (ofc everything is up to you two). It's your decision to reject her or not. But it's her decision to break up with her gf or not.
Maybe you dont have sexual urges strong enough to resurface yet

Guys im having some questions could you pls if you like i mean answer
Okay so there was this girl in our college we were like best friends for about a year or two at that timethen i found that she was lesbian and she had a girlfriend things where normal untill at her birthday we played sth stupid and it ended up me and her kissing after that she acted unusual around me i mean i myself felt sth different but she keeps kissing me for teasing and i don't hate it but when i think about having sex with her I can't with a girl i just like the kissing and i do love her but I can't have sex with her and suddenly last night she said she is going to breakup with her gf .so im so inlove with her but icant imagine doing it with her what should i do ? Am i lesbian ? Should i reject her and tell her not to break up ?