I think you can give it up to your man all day long, but after years of that it becomes the desire for "strange". Something is built within a man to search for new and different.
I have to say, that is what I have learned.
A hobbiest once told me "One day I wake up craving Asian food. The next, I wake up craving a good ol' burger" The point is unfortunate for me as a woman because it let's me know that no matter what, my man may desire more than my delicious burger. Even if it's the best burger ever!
Men crave and desire a variety. Women are different, so this seems so trivial. But it goes back to the basics of male vs. female sexuality. Women desire one man to give their all to TYPICALLY.
Here's where it gets really tricky though. . . you have a true bi-sexual woman in a relationship with a man who wants monogamy and won't allow her to have escapades with females as it is considered cheating.
For real.
If you ask me, the point is, this is going against nature. A man needs to "play" and at one time they used to have many wives. A bi woman needs her needs met as well. If you get into a relationship that cannot understand the needs, then you are compromising who you really are and then will never really be happy. So.... in summing it up.... a man that wants variety needs to find a bi woman and go have fun!
Oh if the world were truly that simple. Til then, hobby on!