It is completely normal and understandable for men to not be in the mood, or not feel ready for sex or physical intimacy. However, men are often shamed and bullied by other men if they express discomfort or unwillingness to engage in sex. This might be the reason for Aman to make an excuse and get out of this situation, instead of openly communicating his discomfort to Naina. Does not wanting to have sex make Aman less of a man?