Which qualities are most likely to end up together?!

Which qualities are most likely to end up together?

I see a lot of relationships where the sign qualities of the people are either:
cardinal & fixed ... and mutable & mutable

i know every sign is capable of being compatible with one another but being a mutable sign myself, i don't think i'll ever be in a stable relationship with another mutable sign... ugh... way too much inconsistency. They're good as friends though but I'd rather a fixed sign.

What are your opinions and experiences?

Fixed has a hard time coping with a Mutable's... well, mutability. Cardinal will be too dominant over mutable. That's why mutable goes best with mutable. Cardinal and fixed fight a lot, but they would still go well - for example my own parents. Incidentally, my mother has a cardinal rising and my dad a mutable rising, my mother dominates my dad, oddly enough.

My brother is a fixed sign, his girlfriend is a mutable sign. His own rising is mutable (pisces). I myself am a fixed sign as well, my boyfriend is a mutable sign as well... and my rising is mutable. I don't know the time of birth of either my brother's girlfriend or my own boyfriend. All I can say is the men whom I did know the time of birth of that I'd been out with all had a fixed rising, and it didn't work out, despite of my own fixed sun. But then again, I am half a sagittarius so I consider myself mutable anyway.