Answer:
This depend on what relationship you are saying and I'm guessing you mean boyfriend and girlfriend relationship. In relationships like these, the reason you go out with people is because you have a fiery feeling for them, you nearly always want to be with them, you want them to go places with you have been and you just want them to love you back as well as you love them back. So in the relationship you will be outing out together to places, hanging out together, doing things you like doing with them, talk to them about things only you think about, you will want to do things e.g. sex, together you don't do with people who are just friends and family. They are like your backup in a way, they are always there to help and cheer you up.