My boyfriend is a manager and he seems to keep treating this one woman extra nice?

My boyfriend is a a manager of a store. He seems to be fair overall but I feel he's a bit flirty with one coworker. He seems to bend over backwards to help her. Even with him being manager, he won't help other employees the same ( at lengths). This woman needed his help with her w4 and came in on her day off to see him and get personal help. Instead of him referring her with the correct phone numbers he helped her for 45 mins. He literally stopped his work to help her just make calls. He also has to mention she's laughing or he's making jokes. Im unsure of her age. I also don't know how to handle this situation because I feel jealous but dont want to overreact. Now I see her schedule changed to work the same day as my boyfriend. Previously they only crossed shifts but didn't work together. Should I address him on this or just sit and wait and watch? Thanks ahead.

My boyfriend is a manager and he seems to keep treating this one woman extra nice?
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