It mean's u had a sexual relationship with them- not a "Relationship-Relationship" with them. Like F-buddies almost...
Either he is related to or in a relationship with someone.
it means that breaking up the relationship will be worse for you then for them
When someone says "you get me", they are expressing that you understand them on a deep level, that you empathize with their emotions, thoughts, and experiences. It is a sign of connection and rapport in the relationship.
They're assuming that your in a relationship and saw your girlfriend when she was out.
It means you are in an abusive relationship and you should get out now.
When someone says "ship me" it means they want you to put them in a relationship.
it means that they want to suck multiple peoples penises at a time
He is saying that he likes you but he also likes someone else.
It means he is not happy with the development of the relationship or he wants to try dating someone else.
When someone says that "We'll keep in touch", he or she is likely wanting to stay in touch. However, it could be that a close relationship is not wanted.
They are obviously not interested in a relationship at this time or they don't see you more than a friend, cares for you but not the way you would like.