^ I think that line of thinking assumes that Harry is hurt Chelsy is not committing. I see proof of otherwise. From all his actions, Harry comes off as someone who is not ready to settle down but wants to play the field. He seems happy and is quite willing to jump from one no-strings-attached relationship to another. His fling with Flee and why it's ended (if we believe one of the reports, his wandering eye) are both proofs of that.
Chelsy and Harry have been photographed, hugging each other, pleased to see each other in one occasion since their split. That does not look like there are any hard feelings, or at least not any more. Both have happily moved on and minding their own business, enjoying their lives. I doubt Harry is trying to prove something to Chelsy and try to make her make a commitment. In fact I get the vibe that Chelsy is more willing to settle down than Harry is. She's after all made all the right moves that would position her permanently in Harry's life, getting her education in England, getting and apartment close to his place and now working in London.
I doubt we will see Harry settling down any time soon. He just does not seem ready and he does not have his brother's motivation to settle down either. I bet he is enjoying being the only single British prince.
That said, I would not be surprised if he meets a girl, falls in love and marries her, all too fast. He seems to be someone who thinks more with his heart and makes impulsive decisions.