I know. I just wanted to know how you people know whether your bf/gf will be your life partner based on what aspect of them/your relationship.

I think a sense of security and stability would mostly be for girls.
For guys, it would be someone who would lend a listening ear, someone who is a great cook.
P.S, this is just created for fun. I don't mean that you must end up with him/her based on what you post here.