Rey Solo was my #1 theory until daisy came out and debunked it by saying han wasn't her dad. I mean I guess leia can still be her mom but I vehemently oppose the idea that Leia would cheat on han.
I liked the theory until after the force awakens. But after it became clear to me that Rey was not their child. It’s just not possible… that Leia or Han would cheat on each other. Or be that concerned with their son and not even mention losing a daughter. It would fall so flat emotionally and idk it’s just not fair to any of the characters involved.