<human>: I've got a crush on an incredibly close friend I've made last year, who's unfortunately got an on-off girlfriend. Even worse, I told him my feelings when he got back together with her for the gazillionth time, in order to provide a reason as to why I'm becoming distant, and he goes "oh shit, why didn't you tell me earlier, I feel the same". 

The really shitty bit is that he's still dating this girl though, which is awful on both her and me, but I'm his emotional girlfriend anyway and it's wearing me down. We've got a super tight friends' group, so I can't remove myself from the situation - how the hell do I get over this crush without jeopardizing friendships?!

He's constantly snapchatting and texting me, cockblocking boys from hitting on me by saying "hey, don't hit on her she's taken!", regardless of who I'm sitting next to he'll always wrangle a seat next to me, and is always about our future plans together - even to 10 years down the road. Every time I deviate the conversation to asking about his girlfriend, all he does is complain about her and then stare at me longingly. I've had enough. The worst thing is that I become firmly resolved, delete all his text messages and everything from snapchat, only to succumb a week later when he cracks an inside joke. 

Our friends' group is unfortunately very, very close and we hang out a lot. Even though I hang out with a ton of other people, these are the people who make me feel most comfortable. How on earth do I proceed to stop myself from crushing on him?

Can you give me a shortened version of the text?
<bot>: close friend won't leave his girlfriend but likes me and is using me as a safety net - how do I remove crush without affecting our tight-knit friends' circle?