Two people who exchange constant communication via text and social media but never see each other in real life. Similar to the penpals back in the day who would write and send letters in the mail to each other from different countries yet never meet.
Amy: girl, i see Mikey always in ya comments! are y’all hanging out?
Cassidy: nah sis, he just wanna be a modern day pen pal. Never want to come out my messages and step into real life
You meet a girl on a date, but realize you're not quite ready to get in a relationship. She calls you messy but reluctantly gives you her phone number. She then calls you her best pen pal and you talk every day on the phone. You realize later that life is short and you want more than pen pals. You ask her things like do pen pals kiss and she asks if you want to go to Mexico with her. A few months later, you find yourself renting a house next door to her but not sure how to surprise her with it.
Girl: did your phone get hacked? pen pals don't ask about kissing
Guy: I've been thinking about kissing you, I've been a bad pen pal
When someone receives a handjob from girl A, and another person receives a handjob from the same girl (girl A). They do not necessarily have to be at the same time.