<human>: Give me a shortened version of the text

Hello guys, sorry to bother, but I really need some external advice. I met this girl through a friend of mine, and all went pretty well as in the 2nd time I saw her we hooked up, went to my house..this is where it gets tricky: that day I was all kind of sick (tonsillitis, painful headaches, etc) and didn't quite perform as I would wanted to. As the days passed, I felt the need to besten my poor effort and tried to hook up again, but no intention from her to get together again was caught so there I was feeling kinda down, as some information came to me a week or so later that she was with another man already. Nevertheless, in this past month, I've been hanging out with my friend, this girl and this boy whom she is with it seems (they don't show any sign of affection), and I get the feeling that she, even though she was sort of evasive with me during this period (messages from whatsapp or facebook inviting her to hang out), she is like sometimes interested in me and always telling me to hang out with them. At first when my approachs of getting alone with her were unsuccessful I started to ignore her, and obviously that's when she started to give me more attention. And one other thing, me and this boy she is with, we get along pretty good. 
I know now that I stood in the middle of their "relatonship", and I also even kissed her being this boy in the same house while not watching (at this moment I didn't know they were "together"). Also sometimes she grabs my hand like the first time we hooked up, but then again, I really don't do what to do or say, in terms of which one is the good or the bad path.
 I hope I was clear, you can ask though.
<bot>: I hooked up with a girl, got a crush, in the meantime I realised she was with another man, she looks yet interested in me even though it seems she is playing with me. What should I do?