How much is too much?

I have been with my boyfriend for almost a year and I've noticed that my urges are outweighing his. I seem to have put my libido into overdrive and he doesn't respond to it. I'm worried that I may be pushing him too much, we are both 25 years old. Ideally I would like to make love at least 3-4 times over the course of the day, on the weekends when we have the day to each other. I haven't gained any weigh, in fact I'm loosing weight, although he has put on a few pounds since we have been seeing each other (about 25).