Paige Lussier - Monogamy

I recently have had a few experiences where monogamy has been in question. A friend of mine told me he wanted to cheat on his girlfriend, and that he had never wanted to before, but there was something about this other girl, who we shall call Sarah, that he couldn't get out of his head. He has had some rocky times with his current girlfriend, and things aren't looking better, but he insists that he wants to work things out with her, instead of just breaking it off. He continues to try and hook up with Sarah, but she hasn't given in yet, knowing he has a girlfriend. What is worse is that he says he likes Sarah too. This has made me question if humans are suppose to be in monogamous relationships, or if it goes against our nature. Very few other animals are monogamous, penguins being the first that comes to mind. Is it really in our nature to be monogamous, or is it just something we go along with because society has told us that's how it should be. I think it's a combination of both. I don't think it is wrong to not be monogamous, but I also think that is something that people need to feel; they need to feel special and loved. And it is the need for these feelings that propels it.