Cheating?

Okay, so Bob is working with this female Carli. He then tells his wife Rosie about her and how they would be great friends. So Rosie goes on Facebook and friends her. Then one day messages Carli hey we should hang out sometime. Bob looks at Rosie and then ask why did you ask to hang out with Carli she was a husband and kids so she gonna too busy to hang out. So then time past by and then Rosie messages Carli again and ask hey we are Facebook friends why we no talk? So then Carli tells Bob to just tell Rosie that she's not messaging back bc she's a bitch. But instead Bob tells Rosie that "Carli is a good and kind person. Who wanted him to tell her that she is a bitch but she isn't actually one so he not going to. But actually wanted to be friends with Rosie but didn't want to get in between the relationship and didn't want Rosie to just use her for info on Bob." So then Rosie messages Carli again and said okay, I am not fake I want to actually be your friend but it's OK if you did not want to be my friend you can just be Bob's friend he has a lot of friends that are female anyways." So then Rosie and Bob got into an argument about something else and Rosie sent screenshots of the argument and send them to Carli for some reason then Carli told Bob that she was gonna block both of them on Facebook. Bc of the message but when Rosie checked to see if this was true she wast block like Bob told her. Then she asked him again did she block you and me? He said yes then said she unblocked me then Rosie told him that she was not blocked and he said that makes sense bc I talked to her yesterday. Also told Rosie that Carli wasn't her friend and that Rosie isn't that important like she thinks she is (when she doesn't but seems like it?)