Have u ever felt stupid when it comes to being betrayed?

long story short i was post to go out with a guy last year but we never really went out i dont kno y . so i didnt kno my friend goes out with him she told me today that that she broke up with him and that he was cryin about it so after she told me that i saw in her cl huggin up on him and edwin the boy im talkin about just look at me i was shocked and felt werid so i ran out of the room. do now i dont kno what to say to him or my friend