Fiancé wears cologne to work every time he works with his female boss (40 y. o)?

She has a boyfriend and two kids. Additionally there is no career ladder to climb as he works in a small car parts shop.

When she is not there he is not using cologne. When he is working with another guy he forgets to use it. I recently became insecure about it…

What does it mean?

Fiancé wears cologne to work every time he works with his female boss (40 y. o)?
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