My boyfriend wants to have an open relationship but I do not.
Why does he want to have an open relationship? Is he unhappy with your relationship?
He is not unhappy, he just believes in a polyamory lifestyle.
Well i hear its popular now.  I've heard there can be benefits, we aren't really meant to be monogamous...its not in our genes.
Correct, they say that even most animals are not monogamous. But I don't like the idea of having relationships with more than one person.