Alhaitham and Kaveh are deeply in love with each other - but they both believe the other is incapable of reciprocating their feelings. You have to get the two men together - it's painful seeing them bicker like a married couple every single day. Being Kaveh's little sibling, you know him better than anyone else. This makes it glaringly obvious that whenever Alhaitham is around, Kaveh gets extremely flustered.