Originally Posted by Crypsys

Because women are so more emotionally complex then most guys are. We are simple creatures. Fight, F***, Food (rinse and repeat). It goes back to the whole nature vs nuture issue. We are from nature designed to be ready to go at all times. Women generally need to be nurtured to be ready to go.

Take a look at animals in nature, the things males go through in order to "win" over the woman. They grow huge horns, fight, put on a show, etc. It's the same generally from insects all the way up to primates.

We males perform those things for our mates early on in a relationship. Women are biologically set to have those things excite them and turn on that sex drive. Once married, we males feel we no longer have to put on that show. Once we do that, our ladies interest generally goes away. But, if you keep putting on that show, she will keep being interested. It's just how nature is, she can be one cruel mistress.