He is Prem just see face reaction in today's episode 100% same as our Prem .why he is testing Heer there must be some reason behind that sure .But his facial expression say he is Prem .the way he pull her same angry Prem
See these two link link after watching today episode .
Prem-Heer Scenes From June 18, 2008
http://www.youtube.com/watch?v=imnW8vxooYw
Prem-Heer Scenes From May 27, 2008
http://www.youtube.com/watch?v=sLAahNWbEO4
please relax he is Prem
don't beat me only my thinking or feeling