someone who knows everything about you; both your best friend and your significant other; somebody who would be gay enough to use the word "bedibble" in general
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.