Lovely. You've an ideas to continue. I know you said you wrote it on a whim, but ideas can help. A nice take, too. Not many concentrate on certain scenes between said characters as turning points in their relationship. What If makes a whole hell of a difference. Alwyays will, always has. Maybe you oughtn't just continue this one, but shift over small incidents like that, until you strike gold with one you can expand on.

Oh!  I loved it... your characterizations are very realistic and I could really see where the progressions were between anger and then to cool understanding.  Great job! 

I hope that you write again soon!

Saphire Starlet