I really loved this -- just a small taste of how Harry and Dudley are working to rebuild their relationship and Severus's natural protectiveness of Harry. My favorite part was definitely this though:
"You owe me."
Harry molded his body to Severus's, their groins in perfect alignment. So bloody perfect.
"You own me," Harry whispered and proceeded to snog him senseless.
That exchange was so simple and yet said so much. I'd say those two are in for many years of domestic bliss, interrupted only by some nights of babysitting poor Evan Vernon. *g*