I'm not sure whether I should pursue this...?

I would suggest yes as life is to short and if ur that good of friends and I've spoke about going with girls I'm sure u could just say u got the wrong end of the stick and smooth things over. I'd suggest to go about going somewhere where u stay at a premier inn or something do it's casual and go out drinking but when u get back and u get undressed to share the bed, start commenting on how good she looks in her underwear or something, make out ur jealous of something about her, and just hand flirt, touching her and saying how much u love what ur touching, and just get close, and when u do say something like, wouldn't it be so mad if we'd got so drunk we started making out or something and see how she reacts, go with it suggesting Maybe we could pretend we were really drunk just to see what kissing is like, then once u start the kissing take it slowly and get into ur thing, if I was her, I'd be putty in your hands lol hope u get out of it what u want and good luck