How Addison Montgomery finally realizes she had fallen in love with Meredith Grey forever ago. And how Meredith Grey realizes she could finally, actually, just love Addison Montgomery back. Set following the events of GA-S07-E15, 'Song Beneath The Song'. MerAdd. Meddison. Also Calzona. Rated E for Explicit, probably. MerDer to MerAdd. How Derek Found Out. Eventual Happy Ending(s).