<human>: Pretty sure my relationship is coming to an end, and it's going to be a painfully one-sided breakup. He adores me, and I care for him deeply, but he's not what I need, and I've realized I can't support him in the ways he needs. 

This boy has been very good to me overall, and I know I'm going to hurt him and I just want to do the least amount of damage when I go. I have no experience with this kind of breakup. Obviously do it in person, somewhere private, not when he's got something important right after, etc. etc. **But what do I SAY??** 

And maybe you're thinking: wow, how arrogant! Who are you to say how he's gonna feel, OP? Way to make assumptions! But he's told me repeatedly I'm the best thing in his life and his motivation. He's been through some awful things and has trouble trusting happiness. And now I'm about to hammer that point home. I'm legit worried about how he'll cope with this. I feel like shit.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Super one-sided breakup seems inevitable. It's going to wreck his shit and I want to do the least damage. Help?