What does it mean?

[Ben]

I'm really worried. I have always thought of myself as a straight sex kinda guy but read on and you will see what I mean. Recently the opportunity for a threesome has arisen - something that appeals a lot to me.

The woman I was talking too said that she has a fantasy of seeing her husband F****** another guy and asked me if I would be that other guy. I said no because I didn't feel that way but since then I have been thinking. Whilst I still might not want to have Anal with him - although I like women fingering me, so could change my mind in the heat of the moment - the thought of sucking a guy's C*** is actually quite appealing.

What does this mean? Am I bi-curious? Or bi-sexual. I have never had any sexual experiences with a guy before I hasten to add. What does it mean?