All things considered, i agree that Guddu should not be the appropriate person for any girl.
But then, Guddu, is not your ordinary bad fella. There's more than meets the eye where he is concerned. You sense some depth in his character. True, right now he appears to be a thug but still you feel that somehow there is something more than thuggery in him. From what i read of the later episodes, he does have some feelings for Rhunjun as he appears to be annoyed that Abhigyaan has come into the picture. I get the feeling that there is more than revenge involved. To me, Guddu (yes he is good looking and perhaps i am prejudiced 😆) is a rough diamond waiting to be shaped (maybe I'm like all other females who think they can change their man!! 🤣). He appears to be using the false accusation made by Rhunjun as an excuse. Note from the start, he appears to be annoying Rhunjun - like any young man who tries to get the attention of the girl they like by being an annoying specimen - haven't you experienced that?!!).
Also on Rhunjun's part, i feel that her character will not develop to a strong one by being with Abhigyaan - he is too tame for her. Rhunjun needs an opposite to develop her character - and she will be a strong character as a result. Is it my wishful thinking? Will the creatives allow Rhunjun to develop to more than a good-hearted timid girl? I wonder.
Abhigyaan's family has accepted Rhunjhun because they believe she brought good luck to him - just because he passed his exams after hooking up with her - how that happened, I wonder!! Now, what if he had failed - would they think it is Rhunjun's fault? Would they accept her then. What happenes if Abhigyaan goes through some bad time - are they going to blame Rhunjun for it? the family appears to have accepted her because they think she brings good luck, not because they think she is good and a very suitable girl for their son.
In conclusion, i feel that Rhunjun may be better off with Abhigyaan but then her life would not be as exciting. HOwever, if she is with Guddu, now - here we have fireworks - she will be expected to deal with all sorts of situations - taking her out of her comfort area. Since i like living dangerously, i would prefer to pair Rhunjun with Guddu!!
I may be wrong in my assumption as i depend on the updates for the story.
Come on this is a show... we want to enjoy excitement and Rhunjun + Guddu = Excitement!!