I have to say that I haven't watched Hollyoaks for a while, so don't really know Dougs back story. However, I watched last Friday, and was just hooked with this storyline. Pj Brennan has been an amazing actor. As others have mentioned, he has really brought over the confussion, anger and happiness that someone In this situation goes through (the scene where he admitted to Ste how he fly was amazing as he really showed how you can go from being on top of the world, to feeling bad, to being annoyed with the person in a couple of seconds when your in that situation).
Ps I have to agree that Pj Brennan has the most amazing blue eyes, they really just stand out.