I think every straight man alive has run across this:
Happened to me with more than one girlfriend. Said I didn’t feel like sex, got jabs that I “might be turning gay” etc. Contrary to popular belief by a lot of women, men are not unthinking sex beasts and we’re not always up (heh) and ready for sex.
And that last comment is dead on about how a lot of women behave. Many women dream of a world where they are only sexualized at the very exact instant they wish to be and no other time.
A lot of men dream of a world where they are sexually desired at all, ever. Big difference!