Backstory: a month before I got with my gf I went out clubbing with some mates and this girl. She was all over me that night, sat in the smoking area with her leg wrapped over me and such.

Basically the reason I didn't go for it was one of my lads had reveale that he liked her and was going to ask her out the next day. Which happened, they web out on a couple dates but nothing happened. I could have gotten laid but I ain't gonna stitch a bro up.

When they were going out on their dates I met her friend, banged her and then got into an ltr which turned into an ldr. That's over now.

I recently saw the girl and I was surprised that she wasn't pissed off at me for ending it with her friend and would proactively chat to me/laugh at a lot of the shit I was saying.

The other day we were talking about reading festival and that her/my ex are going and that it sucks that we won't be able to hang out. I said

"nah me and Emily are cool, we said were friends so il pop over"

Her reply: "oh that's nice, even if not il try sneak away at some point."

Only problem is that they are best friends and have been for years. Obviously if I manage to get her into a position where she's up for it but being all "but Emily" then "I know I know it feels so wrong but so naughty" will work a treat but is it Ben possible to get her to that point?