How do you all fight this urge that I'm trying to currently fight??

Context info: she's straight (I'm bi), she's going through sh!t, we have a GREAT platonic love and are always there for each other... that sometimes crosses into further things when she's all over me, especially when she's drinking some. But I usually back off and just flirt or kiss. This time I submitted, and we had a great make-out session.

I want to be there for her as a friend, but don't want her to assume I'm trying to just because things got a little more feisty than usual.

I subconsciously feel like I'm a pawn for her wants/desires of "love", but also that our friendship means more to me than every time "something" happens. Maybe I'm overthinking?

Edit: Reading this over again made me realize how much I turn into a SIMP for her, and she knows it.