Guys, Ex accidentally called me on Facebook?

Anonymous
So its been months since I messaged my now ex boyfriend on Facebook because we always just texted. We just broke up a month ago and he started seeing someone else. Today at work I saw that he called me on Facebook for 2 seconds. How do you accidentally call someone on Facebook that you haven't messaged in a long time?
Guys, Ex accidentally called me on Facebook?
2 Opinion