Twilight spends the night with Luna, enjoying the soft light of her moon and stars while she contemplates how there was ever a time when everypony didn't love her night.
The other night a friend of mine gave me a full convincing layout of why Twilight and Princess Luna are a perfect couple. I don't generally ship my ponies, I like Big Mac/Caramal sure but it's more of an outlet for my need to see normal relationships, including gay ones, everywhere and that most shows don't give us that. With Twilight/Luna is more personal to the characters, and damn my friend made a convincing argument that I could never hope to retell.
But anyway, this picture is meant to be up to interpretation. They don't HAVE to be together if you don't want.
Desktop sized in case anyone wants it.