You go from "me" to "we" almost overnight and that is when it starts - you begin to get lost. "Me" becomes "we" and you love your sense of independence, your identity and your sense of self. This is not good for two reasons. You stop being the independent, hot, elusive gorgeous creature that attracted him, and the chase is over. He has caught you and he loses interest, because he must always be in the hunt, just a little bit, to remain interested.