Guys, I noticed a lot of people saying they hate the new Prem... I just want to say that the creatives are showing him like this on purpose, so we get confused. So try not to look too deeply into his character traits, the creatives are just making him the exact opposite of Prem.
On one hand, if he really has lost his memory, then he's really free to be whoever he wants. Can you imagine not knowing, not remembering who you are? I've seen that with someone, and it's a real struggle. I thought he had a completely normal (and human) reaction to Heer crying in the room. It was rather funny too, me and my friend burst out laughing. Just because we're used to perfect Prem, doesn't mean he can't be different with ml. If you look at him objectively, he actually has normal, human reactions.
If he's faking memory loss, then all this is clearly made up, and he undoubtedly has a very good reason for that. Although I'm starting to doubt that after today, but then again, it's the genius creatives *rolls eyes*.
At the end of the day, perfect Prem will be back. This new one will eventually fall in love with Heer, or get his memory back, or reveal it was all a plan. But, they need to drag this out, because they can't see the fans happy with Prem-Heer's reunion.