I have a friend who is engaged to her boyfriend, who she has been with for many years (5 ), however she keeps telling me that she would be down to fuck if she wasn't with her fiance or ever broke up with him.

For the purpose of this, I'm going to the girl in question Sarah.

This started when I was invited to another friends house for drinks. I had only ever met Sarah once before at a similar event and she seemed like a very nice person, I got on well with her and found her physically attractive however, she had a boyfreind.

During the house party, we were playing drinking games. One of my friends was set a dare by Sarah to show her his dick; for some reason he said 'no' and she automatically turned to me and said "okay, you show me yours then!". As I liked her (and was a little drunk), I didn't hesitate and said "sure why not". Suffcie to say, I dropped my underware in the corner of the room and she had a good, long look. she said "very nice, thats a waste if it's not being ridden". I was quite pleased with her comments as would any guy.

She proceeded after that to tell all the other girls at the party that "I was being wasted" as I wasn't with anybody at the time. I found out that she did this a few months later when the dare was brought up at another party and I sensed that she was attracted to me. I was intrigued by what she had said and wanted to know if she had said anything else. My friend sent me a copy of what she had messaged her on facebook... "He [me] is above average in both sizes whilst Steve [my friend] is below average in size. If he's [Me] not with anybody then that is a real waste. I'd sleep with him if I was able too."

At this same party, Sarah said to me that if she wasn't attached or with her fiance, she would have "fucked" me right there and then as she thought is was "very attractive." She definitely was attracted to me in both a physical and sexual way and I am still physically attracted to her. I got the impression that she was hinting at a sort of freinds with benefits type of situation.

My problem comes here. Should I tell her that if she ever splits from her fiance that I would be very interested in sleeping with her and having a FWB type relationship?

-PLEASE NOTE, I'm not the type of guy to go about looking to end somebodies relationship. I would just like her to know that if she ever did break up with him I would be interested.-

TL:DR Friend is engaged, keeps telling me that she finds me attractive and would sleep with me if she wasn't engaged. Should I tell her I am also inerested in sleeping with her if she broke up with her fiance?