If your partner has given you oral satisfaction and you have yet to preform, no is a good time. You don't want to leave her unsatisfied. There are guys out there that love the taste of cherries. If you're just starting and never finishing, she has to do the work herself. We all know how women hate doing work.
Any sexual relationship is a give and take relationship.
If you expect the best oral sex ever, well then we do to. Keep a rhythm going. It's hard to adjust to and you're just going to be doing more work. None of the pausing crap either. Yeah, that's right.