Worry when she stops arguing over the messy pile of ***** clothes on the floor. Worry when she no longer pushes you to call your mother and ask how she's doing. Worry when she stops coming home and rambling on about her day. Worry when her opinions turn into, "whatever is fine". Her voice muffled now, something else is on her mind. Worry when she loses the glimmer in her eyes that used to be the only thing you ever wanted to be blinded by. Worry when you start to forget what her laugh sounds like.
These are the signs of kindling losing its flame. Worry then or you won't realize until it's far too late. When everything that matters to you is stained with traces of her and you’ll be reminded in the most bitter of ways.