i see a guy who tried to end a relationship, and now has an x who wont let it go, and he feels pity for her. and being a nice guy, albeit passive aggressive, he says things that he THINKS she'd want to hear, because she's SO desperate and SO needy and they have to interact on a daily basis.
So he says all the breakup cliches: Its not you, it me. If only i were not broken, I'd come back for you. You deserve better than me. I'm working on myself, but dont wait for me, this may take a while. i care for you, but i'm just not ready for a commitment i love you but i just cant give you what you deserve.
but he runs out of cliches, so he tells her he'd dated his dog-walker and is now dating his real-estate agent (leaving out the gory details because he doesnt want to hurt her) and suggests that she should start dating too.
but even that doesnt work, because she has selective hearing.
so whatever "bones" he throws to her is not to keep her latched on to him, but instead to convince her move on already.
and when he sees her finally moving on, he loosens up and jokes around trying to be friendly, even pisses by her, only to have her misinterprets it as him making advances.
in a final act of desperation, he offers her the relationship that she has SWORN she would NEVER accept, only to have it backfire when she actually accepts it.
"In a ham and eggs breakfast, the hen is involved, but the pig is committed".
