Florence is a great little game about relationships that we absolutely adored. The only problem with it is it's over a little too soon. If you want some other games with some emotional range like Florence, check out these suggestions:
Will It Ever End?
If you want an experience that's eerily similar to Florence, check out Will It Ever End? This is a game about routine and relationships, and it conveys its narrative and ideas completely wordlessly. Its gameplay may be pretty simple, but it uses a lot of visual tricks and employs some great audio to get you wrapped up in the action.