Cellationship
A sexual relationship that takes place solely on your cellular phone, i.e. sexting, phone sex, etc., possibly with a few real life sexual meet ups. One person usually has multiple cellationships, and hides all the other ones from each of their partners. These relationships don't last long and are usually just for hook-ups.
Sally: Jan, are you texting that boy, Charles, you're in a cellationship with again?
Jan: No, I'm texting Brian.
Sally: Wait, you have more than one cellationship?
Jan: Doesn't everyone?
Jan: No, I'm texting Brian.
Sally: Wait, you have more than one cellationship?
Jan: Doesn't everyone?