It's an interesting ending. I read it again with the beginning and middle and it makes a solid arc for Matt. That last line also really helps to round it out. I'd going to pull out one of my standard critiques and ask for a bit more connection between the characters and the situation. The cuffs certainly take it out of the romcom category, but the section itself feels a little shallow. The moon and the sun, the new experience, the morning after, they all seem to scratch the surface of this larger idea, but I don't have enough of the picture to bring them all together. But, like I said, it rounds out at the end with the meeting of the wife. It connects when he meets back up with the best friend. It works as a whole, it just feels a little light at the end. Also, I hate writing endings.