Social Studies: Public displays of affection

Does seeing a couple on a bench sharing a kiss make your heart warm or does it make you blush and avert your eyes?Attitudes to public displays of affection — PDA — has changed fairly rapidly over the last century and could be in for another shift. Culturally it seems that Gen Z have some harsh opinions on PDA calling it 'cringe'.What does it mean going forward and how do these attitudes change over time?