I just read an article in OPRAH by some Phd. person that summarized some research about romantic love. I've read in the recent past that "being in love" is a temporary condition created by Mother Nature to get us to make babies. Supposedly when men are in love, their testosterone drops so that their brains are able to form a bond with someone. Eventually the condition wears off though.
This most recent research compared old people who had been together years and years but who said they were still in love to young people who had just fallen in love. Their brain waves were measured and sure enough the same part of their brains lit up on a scan as the young people's brains. The explanation? (This is where I laughed out loud.) "Love blindness" or "Self-deception." In other words, they had trained themselves to look at the other person's loveable qualities instead of their faults and had continued to tell themselves how wonderful the person was and how perfect their relationship was.
Hmmmm. Self-deception. Always a useful tool. I don't know what to think about this!