Is there a difference between dating someone and being their girlfriend?

Generally speaking, dating describes a less serious level of commitment before either person is ready to describe the other as a girlfriend or boyfriend. You can only determine which term is appropriate by discussing it with the person you are seeing.

What does a relationship mean between a man and a woman?

1 the state of being connected or related. 2 association by blood or marriage; kinship. 3 the mutual dealings, connections, or feelings that exist between two parties, countries, people, etc.