What does it mean when you say you are "hanging out" when you're with her boyfriend she says "I don't hang out with him"?

sage2021
I caught my helper in the beauty salon where we live. I knew she was with my boyfriend. Then I walk into the beauty salon while it was empty so she could wash my hair. I'll be damned, I knew were together. He always drank those Big GoLo drinks and she always drinks miniature Pepsi in the blue can. The big gulp or whatever they're called was empty with an empty mini size Pepsi in the blue can inside of his cup. I knew they were seeing each other behind my back, him cheating. So I said "Oh, is this where you're hanging out with him? She said I don't "hang out" with him.
Your thoughts? What does hanging out mean to you?
What does it mean when you say you are "hanging out" when you're with her boyfriend she says "I don't hang out with him"?
2 Opinion