Ok...it's a really interesting question. I personally don't hate Aryaman...but that doesn't mean I love his character too.😆Reasons:-
(1) Aryaman's relation with Manik and Nandini- He never deeply connected with Manik..but connects with his girlfriend Nandini. It's fine...I understand that Aryaman made his connection as a shoulder to cry on...as a friend. But then, Nandini took that shoulder because she missed her love and best friend Manik. Every person looks for a friend...a friend who is there when U feel low. If Manik were not involved in this accident..do U feel Aryaman would have such a friendship with Nandini???? No...is the answer. Because when Nandini feels low...lost...worried...lonely, she would go and look for her best friend Manik. Remember? Once Nandini said that 'Manik is the best friend and so she wanted to their relationship slow and be friends"! Aryaman becoming Nandini's best friend is like Aryaman replacing Manik as her best friend. But Aryaman I'm sure will continue to do it. He would wait for Manik to get angry on her..and become her shoulder to cry on...which will lead to Manik feeling that she no more needs him.
(2) Nandini's nature and Aryaman's behaviour- I know...this may sound a bit weird...but Nandini is different from Mukti, Alya for whom hug was not something thrilling or something. 😆 For Nandini her first hug..her first kiss...all were making her blush, shy...Nandini has a more traditional kind of personality. When Manik sees Aryaman giving her consoling hugs (which I will CVs may show😆) how will he feel? The girl who blushed in his hug is casually hugging another guy who is not even a close friend to him...and who infact tried to harm him in the past and in 4 months became Nandini's closer friend...😆
(3) Touchy feely in an over-friendly way- If U ask me...can't a girl have boys who are friends?? They can! But Aryaman's actions are not just of a friend as in he gets all hugging and all. It is of a guy..who got closer to Nandini first as a friend..and wanting to take her place as a best friend whom she will trust 100% and then as a lover.
(4) Stalking is yet another factor. If U take Kabir or Dhruv...do they go after Mukti and Alya 24/7??? Have U seen Aryaman walk behind Mukti or Alya giving a shoulder to cry on when they are sad or worried?? How can he even know that?? Coz he is stalking Nandini. His eyes are always on Nandini and that is what Manik is not going to like.
(5) Kabir, Abhimanyu and Aryaman- Manik had no problems with Nandini being friends with Abhimanyu or Kabir...for the simple reason that they never stalked Nandini or had such an over-friendly attitude towards her and they let Manik take over when they saw Manik getting next to Nandini! But Aryaman has been stalking Nandini since the start of Season 2 and I'm pretty sure...in coming episodes he'll do exactly that and won't even allow Manik and Nandini alone time.
This surely is a bit irritating to watch...taking into account that since Manik has returned..Aryaman should give some alone time to the love birds to patch up..instead of following his friend Nandini wherever she goes..as if she is a baby who is learning to walk! Doesn't he have other work to do?? If no other work...atleast jaake drums practice karlo! 😆