My advice would be to take a closer look at what you have a home. 9 years and a good sex life hardly seems like anything you'd want to toss away. New love always seems perfect... one wrong move and you'll have neither of them. Proceed at your own risk and try to use the big head to think with. Good Luck.

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As to marriage or celibacy, let a man take which course he will. He will be sure to repent - Socrates

Love is not looking in each other's eyes, but looking together in the same direction - Antoine De Saint-Exupery