Disclaimer: These are purely my personal opinions and I don't mean to offend anyone.
Somewhere I don't get connected to ArNoor at all. To me, their relationship seems more like infatuation or attraction rather than love. One of the reasons might be that we are not shown the process of their love. But even after the leap, I only find cinematic dialogues between them. Rarely do I find some deep conversation. In fact, I never found it. But their couple looks cute together. No doubt about it.
I think Noor is childish, impatient and immature. And bit too loud sometimes. I felt this way many times. I know taking advances may be cute, but if they show only that, it somehow doesn't convince me.
Above all of this, I don't like the fact that Noor keeps calling Anjana names and taunting her in front of Arjun in her absence. Now, don't get me wrong. No doubt in saying Anjana is the most annoying character of the show and her screen presence make me feel like ufff not again! But the thing is she's the mother of Adi and Arjun. If not for her, Zoya and Noor need to respect her as they value Adi and Arjun.
When I say this, I don't mean a girl should behave like a subordinate to her in laws like typical shows in ITV. I can't bare that mahaanta. In this regard, I like how Zoya conducts herself. She talks to Anjana with respect, never calls her names before Adi or anyone for that matter. That's the value and patience she has for the people precious to her friend. But at the same time she doesn't get into this abla mahaan naari shoes. She stands up for herself and speaks up when her self-respect is messed with. I love that. She never overdoes it. She talks short and straight. Very gripping. I feel that's a matured way of handling.
Noor on other hand keeps calling Anjana cunning, kadoos etc etc before Arjun and he listens all that with a smile and never even feels bad. That seems odd to me. I think it's an immatured way of handling. She never speaks before Anjana and always keep taunting about her with Arjun. Life of Arjun is going to be so tough after shaadi I see.
Even in the acting department, I think ArNoor need to work bit better. Especially Noor. Most of the Bepannaah cast is very convincing in their roles. While I don't say Noor acts bad or unbearably, I feel her action isn't as organic and natural. It's more artificial than many other actors of the cast. At least, that's what I feel. May be because she's relatively new to the industry but she needs to improve herself to have a good career. After all the shooting set of Bepannaah shouldn't be considered any less to acting school ;)