<human>: So I met these two girls the same night and we started to hang out in groups. Throughout these hang-outs, I learned that girl B had some sort of 'rights' on me. For example, girl A would take the front-seat forcing girl B to sit in the backseat with me. Girl A was pretty much wing-manning for her sister.
One night I was walking with girl B talking about deeper stuff, got caught up in moment, expressed feelings for one another and we kissed.

Problem? I actually like her sister, girl A. Working quickly to rectify this is best I could, I talked to girl B about how things were rushed, I was vulnerable, and it was generally a mistake that we kissed. She took this more in a way of 'lets go back to being friends, and wait'. When in reality, I have no plans of dating her what-so-ever.
Now I have successfully seemingly forever barred off the actual love interest,girl A, her sister, as I, being retarded, kissed girl B.

Girl A and Girl B's sister relationship is important to me, I really don't see how I can safely pursue girl A at all, without dramatic things happening.

Only way I see this happening is if we stay friends long enough for girl B to move on, with the passing of time maybe pursuing girl A would become socially acceptable. Sigh... What if she finds someone else in that time?

Neat info: Girl B told me how her sister, Girl A, talked about me a lot when we first met, and people thought she was interested in me.

WHAT DO?

Can you succinctly summarize the text in 1-3 sentences?
<bot>: Girl A and girl b are sisters. I am interested in Girl A. I kissed girl B like a moron. What do?