You shut your mouth, you don't know anything about me and Cas. For starters, I just met the guy a few months ago when he was supposed to pull me from Hell. This 'God' of yours, he's sorely mistaken. He didn't come to me until the moment before he was about to swallow up a million bad souls and when I said it was a bad idea, he got all butt-hurt over it. Not my fault he didn't want to listen to me, he's just being a big baby in a trenchcoat.
And as for Claire, we didn't do shit to her. I protected her and made sure she was alright. Did she tell you we were together? Probably not, seeing as how you can't really be trusted.
She wanted to leave because of some shit you said to her about her being some sort of monster, which I totally don't get seeing as how she was human. But I guess that's what people who believe in false God's do. They manipulate good people.