Generally speaking, "dating" describes a less serious level of commitment before either person is ready to describe the other as a girlfriend or boyfriend.
This is not a firm rule because the terms have no strict definition.
You can only determine which term is appropriate by discussing it with the person you are seeing.
Two people who are dating may not consider themselves a couple and may see other people.
Conversely, a committed relationship suggests that you are in a monogamous relationship.Dating and being in a relationship are the two most popular terms these days that have often been used again and again by several couples so much so that many would view the two as synonymous to each other.Even though both of these involve two particular persons yet there is a difference between them.Words like "girlfriend" and "boyfriend" are used to describe a relationship in which two people consider themselves to be a couple.This doesn't mean they have made a long-term commitment or have agreed to be monogamous. Some people commit to seeing each other exclusively before agreeing to use labels like "girlfriend" or "boyfriend." If the person you have been seeing wants to use these terms, it means she considers you to be a couple. When people start dating during high school, they are usually trying to have fun and learn about relationships.