i too believe that he is an anti hero. his character now has many shades. earlier he was a shy nerdy guy who had fragile heart and loved his best friend truely. he was isolated but got solace in suman's friendship and this same guy when got his heart broken by the girl he loved. he stopped believing in love. he now knows what the opposite sex wants so he does everything to woo or win them be it chachi vandy bhabi urvashi or suman. but somewhere still his heart is the same. who still loves suman longes for her but he is scared to get hurt again. he is scared face that heartbreak again. he is scared of rejection. thats why he created a boundry. a wall. so that no one can crack it. he did it for suman but as we know his ego got hurt when suman told his about his ego. coz to him its not his ego. it was never his ego but for his self respect he went away. so he decides to make suman feel the way he felt 10 years back. i dont feel bad either for suman trust me. its like karma.
and regarding shravan whatever he does it ll hurt him more than her.. its like suman ll get hurt but shravan ll feel the pain but he wont show it.
i guess it just turned the love hate relationship way. kind of a dark love story. so lets c how it all turns up
u r bang on. Its always about their egos and pride..they both don't want to be vulnerable in front of the other..