There may be something to your "too close to home" theory. I have a hard time getting a sex scene to even reach PG-13 territory, but I noticed that the one time I tried to do a f/f "and they they kiss and make out" scene, it was even more like pulling teeth than it usually is.
... come to think of it, (tame, PG-13-rated) sex scenes are also easier to write when I'm not cowriting them with my significant other, which just adds a whole extra layer of "ack, no, this is too embarassing! I can't describe a sex act to her and then have her describe the character's reactions and the subsequent sex act to me and then type it up and post it on the internet! That's practically like having phone sex and then letting my flist read a transcript of it!"
That doesn't really affect writing all the parts of ship fic that aren't sex scenes, though. There, I just have a bad case of OTP-fixation.
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Date: 2011-05-20 07:13 pm (UTC)... come to think of it, (tame, PG-13-rated) sex scenes are also easier to write when I'm not cowriting them with my significant other, which just adds a whole extra layer of "ack, no, this is too embarassing! I can't describe a sex act to her and then have her describe the character's reactions and the subsequent sex act to me and then type it up and post it on the internet! That's practically like having phone sex and then letting my flist read a transcript of it!"
That doesn't really affect writing all the parts of ship fic that aren't sex scenes, though. There, I just have a bad case of OTP-fixation.