#1: Draw The Line
The level to which a society can tolerate couples physically indulged with each other can vary. It is very important that a girl draws the line by keeping in mind the social expectations from her.
Guys are not very good at controlling their thoughts and act according to the heat of the moment and it could turn nasty sometimes.
If you’re not comfortable with public display of affection, tell your man that you don’t think it’s a good idea.
You will also have to think about the social setup. For instance, people can probably take it when two people kiss on a train, but in some societies, it might be awkward for you to even hold hands in public.