What started out a bit quirky, cute quickly turned into something more serious. I thought this showcased why these two are made for each other so perfectly despite the different settings or background histories all of us have come across.
Derek's psyche is particularly scarred and traumatized by Kate. Not that he shouldn't be or isn't in all the other stories we've read, but the subsequent fallout from her betrayal had severe ramifications here.
So yes this had humor but also a lot of heart. There's great poignancy amongst the flailing - and I loved it!