Why are you asking us? Its a personal decision. I know a married friend of mine who says his wife not give it up for 6 months. Does it bother him? It did in the past... But only because he'd go in the shower to relieve himself and she'd get pissed at him for doing that! He's just like WTF...
Yet other people might say every other day is not enough... My last GF wanted it 2 times per day (if not more), if I didn't give it to her, she got all pissy with me... And threaten to go elsewhere looking for action. She did eventually look elsewhere, which is why she is an ex... I personally could not do it that much as it got boring, and not to mention, messy, and then she'd get pissy at me for wanting to shower after because then I'd shower too much. Again, wtf...
Normally I'd say a week is a good pace... Sometimes more, sometimes less, depending on the conditions.