How would you define the perfect Girlfriend/Boyfriend?

A few chapters ago Haruto described Asuka as "The Perfect Girlfriend". In the Choose the girl thread I made a comment that I don't think I would want a girlfriend like Asuka in the sense that she forgives me for everything and never gets into arguements with me nor does she get jealous if I'm with other girls.

There were quite a few who agreed with me that they would not want that kind of girl as a girlfriend. So if you were to take certain traits of certain girls from the series and maybe add a few more from your own thoughts. What would you come up with as your perfect "girlfriend/boyfriend" well for those making a boyfriend your welcome to use the male characters from the series or any other you want.