Public displays of affection, also known as PDAs, may elicit a wide range of reactions from people around you. Some of the factors for tolerance include age, social norms, and customs. If you're not sure whether or not an action is okay in any social setting, you should probably hold off until you are in a more private situation.
Public Display of Affection has always been an issue everywhere such as the learning environment, working environment, and etc. Some think it is all right to engage in such behavior because a person is entitled to freedom of expression. But others think PDA is risque and lacks etiquette.