I agree with AnjanaToronto completely! I think we all are forgeting another thing here, if things are so "rushed" we should remember that this isnt the present, this is the past. Arjun is in jail right now and according to what we've heard, their love story isnt a very long one so I think keeping that in mind it would actually be very impractical to have the two confess after like ages and THEN start their love story which would take a whole year on its own, as we see in other serials!
And another thing, I really think that if Arjun were to do a 360 it would be if he was the Arjun from his entry to the Arjun we see today. He HAS been changing over time, he just doesnt realise it himself. I think his view towards women also changed over time, but again it was that he was refusing to accept it because he still felt such strong feelings of hatred for his own mother. He was learning that all women aren't evil through Arohi but being the great Arjun Punj, he was too stubborn to admit it. It was just bad timing for Arohi on the cliff because they met right after the fiasco with his mom and he repressed the changed feelings he had towards women in general and let the feelings he had for his mom take over. If he really did hate women the way he did initially then he wouldnt have asked DK if all women are bad. He knew they weren't and he just needed reassurance because he was scared. If he was so sure that women were evil then he wouldnt care what anyone said, but he did.
Arohi had some misconceptions about Arjun too and it wasn't just that she realised he was the "saving-the-poor-dog-guy", she had those feelings for Arjun before, it was just this misconceptions about how he treated others that made things a bit hard for her. She knew she had this feelings for him deep inside but she wasn't letting them come out because her feelings went against what she knew about Arjun's morals. Learning that he took care of that sick employee and that dog just reassured her that Arjun is truly a good person to whom she can open her heart to love.
Thats my POV on this, I know some of you think its too much too fast but relax guys, we have Arjuhi romance to look forward to now! 😊