Green Eyes in Cornville

So I think I am jealous of the easy flirty ways of one of my acquaintances. I mean it is totally her nature, her aura, her role in life to be a smiley, flirty, cuddly person.

However she is also being herself with a friend of hers/ours to whom I could totally be attracted. However, when I slept with him he let it be known that he is not in any way interested in a relationship with anyone right now (which I was totally fine with). I in no way want to do anything destructive to him but it would be SO easy to start to like him, to want to date him....

So, because of this I am experiencing some jealousy....With which I am not sure how to deal.