Every couple needs to do PDA.

Public displays of affection (PDA) are acts of physical intimacy in the view of others. What are acceptable displays of affection vary between cultures as well as to time and context. Which acts are acceptable have also varied over time. Displays of affection in a public place, such as the street, are more likely to be objected to, than similar practices in a private place with only people from a similar cultural background present. Mild forms of physical intimacy, such as holding hands, hugging or kissing, are regarded as unobjectionable forms of public displays of affection in many cultures and contexts, but objectionable in others. Maintaining eye contact can be regarded socially and psychologically as analogous to touching in some cultures.