Lucky you're in love with your best friend. Very lucky, indeed.

Bella: Is it possible for someone to be extremely comfortable with one person, but ridiculously in love with another?
Ummi: Yes it is, but they're not the same. The two different people.
Bella: Then if that person is to get married, who should s/he choose? The person s/he's in love with, or the person s/he's comfortable with?

I thought your partner should be your best friend. 

How could you have another best friend of opposite gender when you already have a partner?

I guess it depends on how you define your 

best friend.

The bestest friend I know I'll never lose.