Some people have actually tried Prozac as a weight loss drug. You should be fine in that department.

Sex is a need. Human beings need to have sex. We are hardwired to have sex biologically and not having it is difficult.

I don't think it is a need for everyone equally. I don't think that you HAVE to have sex to be happy or even masturbate. Some people have low sex drives or whatever and just don't need it. But I would consider them in the minority and most people need some sort of sexual activity.

For myself, I can't say if I need sex or not as I am a virgin, but I can say that without masturbation, I am a cranky, foul, frustrated human being. I am happier when I masturbate.

But even still, the whole "men have needs" thing is annoying. Yes, men have needs and need to "empty" themselves every so often or they get pain, a phenomenon called "blue balls". However, women also get "pink balls" but people don't talk about that much. And you don't literally need sex to the point of water where if you do not have sex for a few days, you die. I'm not saying that you guys have been sexless for only a few days, I mean that he should be fine wacking it off in the shower and waiting for you to feel better