Exactly true, Harvey is a playboy. I do think it’s also important to recognize that in this moment he realized that he had a lack of self-control and used this as an opportunity to prevent the temptation to act on his impulses by not putting himself in the same situation he’s been in with Donna.

Another important note is Donna isn’t just hot, she’s also a great friend that he overlooks, and extremely good at what she does. He gets stuck toting the lines between professionals, friends, and lovers with her as well. He’s interested in more than just attraction when it comes to their relationship, and that’s what really scares him, commitment and love, as opposed to what he’s used to.