Harry stopped just short, throwing himself of balance slightly. "Oh sorry!" He felt his face flush a little at the fact that he nearly ran someone over, what a great way to continue his night. With his luck he would have to take whoever it was up to the infirmary and get a scolding. That thought pattern quickly changed when he realized who it was he nearly hit.
"Erm, hi Ginny. Sorry about that." Harry sidestepped slightly. He really wasn't sure what proper etiquette said at this stage so he opted with the obvious. "Going out for a fly?" OH brilliant, Harry, as if that wasn't clearly it Harry thought to himself. The "accidental" blush now deepened to one of embarassment