Let's say a guy asked a girl out, and the girl said "Why do you want to date me?". In that case to mean that it is possible that they are going to be happy together in the future, the guy can say "You and I can be happy together.". What about "You and I might be happy together." I know that we can use "might" to refer to a future possibility, but somehow in the sentence and context I gave, it sounds somewhat unnatural to me. Does it sound unnatural to you as well, or is it ok to say "You and I might be happy together" to mean it is possible that they're going to be happy together in the future?
Note: I know that "might" indicates a lower possibility than "can".