If you don't mind my curiosity, I would like to know what one can talk about with one person for 12 hours a day, even if it was just one occasion.

I have a gf, my age, whom I have known since we each were 4. She now lives in Midwest. We talk on the phone a lot, but we are yet to beat your record of 12 hours a day. Tell me, please, what you talked about with him, because if you don't, my gf and I might simply die out, like dinosaurs, never having reached your heights in conversing.

On a more serious note, you need to diversify your portfolio of contacts, your portfolio of activities, etc. You have placed all the eggs in one basket, and that has started to backfire.