Right, It's a pretty odd situation but I'll explain as best I can. Met this girl at a mates house and she was pretty cool, started talking, light kino, very little escalation (simply because I know that she is sleeping with the mate I was hanging out with at the time (Lets call him Dan to solve confusion), however it's not serious and just 'fuck buddies') but anyway.

Had a pretty good conversation, and as I've just moved into the city, she offered to show me round a couple places, naturally I agree'd.

Went out into the city, and she took me to a Buddhist Meditation session, was really good, but that's another story. Anyways, on the way back, more playful banter, bit of negging, comfort building etc. However she confesses that she has more than just 'fuck buddy' feelings for my aforementioned friend.

After venturing back to our respective houses, we bump into a couple of my mates, And I suggest we all go to the park. Everyone is totally game. Set off to the park, Little bit more kino, however she is very 'tom-boy' and very very difficult for me to read. I was just wondering, Is there any point trying to escalate if she has already announced she has feelings for my mate? I know I'm taking it slow, but hey, I'm new to all this Seddit stuff :P

I'm not too hot on the cold approach sort of ideas, and I can feel a little bit of one-itis creeping in however I'm forcing that down with as much power as I can muster.

Oh, and PS: I know this will make a difference, but for some of the time talking she was complaining about Dan and his issues and how he can never be bothered to do anything, hence my suggestion to take her to the park, and climb some tree's and shit.

So, anyway, Any advice?

TL;DR Hung out with a lassie who is shagging a mate of mine, think shes pretty cool, went out meditating together then went to the park. Very difficult person to read, Trying to avoid one-itis, and escalate