<human>: I'm putting this up here for a buddy of mine, who was reluctant to do so himself for some convoluted reason.  We were talking about some chick that's hanging around him and he can't get rid of.  Here's the juicy bits of the conversation we just had.

"I dunno man, because she's basically kryptonite?  I don't know if it's intentional or not, but she's got me wrapped around her little finger. She knows I have, or had feelings for her.  She even brought it up.  But she's obsessed with some other doucher that she insists on bragging about. But she can't get him to want to DATE her.  She's going on and on about having to train 'this one.'"   

"And you're crazy about this bitch?  I'm going to point out that at least with (previous girl that turned him to mush) she was also nuts about you.  And a decent person.  This lady sounds both psychotic and uninterested.  I gotta say man, you're better off."

"Yeah, I know that.  But she's so good at getting to me.  I only ever told her I had feelings for her in the hopes that she'd reject me and I wouldn't see her again."

"And how'd that work out?"

"She invited me to her place for a drink.  After rejecting me flat out."

"Ok, get her the shitfuck out of your life."

"Yeah, that's the plan.  But how the Fuck do you tell a person (that you're insane about) that she's kryptonite, and 12 years of on again off again friendship is going away forever?"

So, since I have no idea how to answer that question, I'm crowdsourcing it.  Help a bro out Reddit?

Could you distill the essence of the text into 1-3 sentences?
<bot>: friend of mine is crazy about this woman that has a pretty strong hold on him, wants to not have her around anymore.