Arnav/ Barun's expressions

So I don't claim to be someone who evaluates actors on a regular basis or observes ppl mannerisms and judge them... But today's episode really made me notice Arnav's expressions and Barun's acting skills in general..
I am sure everyone must have noticed this a long time ago but i recently started watching the show so this is all new to me..But He has some amazing expressions..like forget dialogues which he really does'nt have that many and i guess that suits him..
The way ASR is portrayed to be, I can imagine him always being this quiet guy who talks only when its important and when needed and I don't think that would ever chagne..But to take a character like that and portray him on screen in a way that your audience can still connect and in a way sympathize with the character..Its a pretty hard thing..
I do'nt know if I make sense but what i am trying to say, is that its a pretty hard job portraying a character which has like two deep layers - like a good and bad and making sure that even when you show the bad layer, the audience still likes u and see the bit of the good too..And that too without saying words!! Just through expressions..Like today, the 20 different expressions on arnav's face from "oh shit khushi is not home", to "is this possibly my fault?" to "Oh god please let her be safe!!" and ultimately when he closes his eyes after rescueing her i feel he is thinking along the lines of relief that she is safe and out of danger to "why the hell was i so worried, anyhow everything is ok now, I need to be calm and just explain that maybe it was my fault 5% but if only she did'nt create that ruckus in the morning!!"
I had to rewind that closing eyes scene like 5 times cause it was amazing..like u can literally see his thought processes..That two seconds that his eyes were closed and and before he turned out were according to be the best scene I have ever seen..And i really give credit to the director and the actor who showed the anguish of this egoistical narcissistic man so brilliantly..
I intially did'nt like Barun's acting cause i was like man why the hell is he always shown angry..But I think it really takes time to get used to reading the expressions and understanding what Arnav singh raizada is about..
Ok i hope this made sense..:) thats all for my rant for today :)