Is it a red flag if wife doesn't tell you about guy hitting on her?

Zezzara
We have a very honest relationship. We tell each other everything. When a girl hits on me I let her know right away and details. I usually kindly shut the girl or guy down right away if I sense flirtatious behavior out of respect for my wife.

She usually does the same for me except she doesn't shuts them down and enables them. She still tells me right away though.

This stranger she takes the bus with was trying to know about her and her schedule. He spoke to her a few more times asking personal questions and waiting for her she would tell me evertime. One day she mentioned that she lives with me her husband. The guy went silent and instantly stop the conversation.

Today he was back at it again but this time my wife didn't tell me about it like she usually does. She stayed silent about it until I asked her about the guy casually. She knows what his intentions are but I feel like she wouldn't have told me unless I asked.

Is this a red flag?
Is it a red flag if wife doesn't tell you about guy hitting on her?
3 Opinion