Compatibility 0% is it possible for them to fall in love and marry?

So my miis are based on my stuffed animals and real life. So far all my stuffed animal pairings are going as planned. But my SO mii and my mii have 0% compatibility (sagittarius and scorpio). They have rooms next to each other but they still aren’t friends.

I know you can’t really force a relationship but I’m wondering if 0% really mean they will never be a couple even if I just wait it out?

I don’t really want to redo the characters just so they can be together.