That's fair.
Not me, but a buddy of mine in college had a time where his girlfriend initiated sex then immediately wasn't really into it and was just distracted and disengaged. He asked her 'hey what's going on, what do you need?' She said 'I need about tree-fiddy.' They laughed, got back into it and had sex. This isn't a joke, she said that and they're married now.
IIRC she lost focus because of some college bullshit that distracted her at the time, and my buddy wasn't a dick about it. It's good to be able to deal with the mood breaking and still be together.
