<human>: Could you distill the essence of the text into 1-3 sentences?

He inadvertently lead me on earlier on in our friendship by being very affectionate and touchy-feely with me, little did he know every caress and kiss on the cheek was making me fall deeper. 

As much as I value our friendship (he's my best and only friend in the world), I couldn't help but fall in love with him as a person and and these feelings  intensified with time and a sexual attraction developed simultaneously. Ideally I'd be able to control these feelings or not have them at all because what use is falling for someone who could never be attracted to you.

I was confused at first because of the way he touched and looked at me. It gave me some confidence to try and push our relationship in the direction I wanted, although I only tried when drunk. For example, when he would touch me I would touch him back but more suggestively. Of course it was to no avail as he would eventually move my hand away and remind me he's straight. 

I imagine he has some slight idea that I'm attracted to him, but we've never discussed it nor brought up those awkward drunk moments. 

So anyway, despite the fact we're very close and have a great friendship, my heart breaks every day when I realize my love is unrequited. I've considered ending the friendship but I can't see myself doing that realistically, we're too close.

We are housemates too and what makes it worse now is that his love interest has started coming around regularly and I hear them having sex and it makes me feel so helpless and jealous, and then I get mad at myself because I can't control any of my feelings towards this situation. The girl is in his bedroom right now and I feel awful.
<bot>: Very in love with my straight best friend and he has no idea. Jealous of his love interest, they have sex regularly and it kills me. Not sure what to do?