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PaulA
Since: Jan, 2010

There's a Sci-Fi book I read a few years ago, involving twins who were telepathically connected, though they didn't know it, and the government is trying to find methods of FTL communication, so the protagonist, one of the twins, is sent on a spaceship, and sends reports back through his brother and eventually his brother's children, since the still-on-Earth brother aged faster than the out-in-space brother. The last one was a girl, I think, and eventually, when he got home, they possibly got married? And/or she was his great-granddaughter or -niece?
The other thing I really remember is that the brother who stayed on Earth had really wanted to go, but ended up falling (while skiing, maybe?) and injuring himself right before he'd have to leave, and it was only years later that the protagonist realized or learned that in fact, he'd done it at least somewhat deliberately because he didn't really want to leave Earth... I think he'd always been sort of the "dominant" brother, always choosing first, getting his own way, etc., and by the time they were allowed to choose which one of them would go, he felt almost forced into it, or something like that?
Also, one of the twins (the one on Earth, maybe) might have been named Patrick, and the girl might have been named Victoria, though I could be thinking of something else.
I wish I could remember more, but I read it while I was sick several years ago, so my memory's kinda fuzzy.