Should I talk to my female friend about why she kissed me on the cheek? She thought I was asleep?

We've been friends for years and she's recently single and has been super flirty around all of her guy friends. Understandable she's trying to move on. She had a class late last night and was feeling sick and said it was her girly time of the month so i let her spend the night and she was thankful so did nothing weird. She cuddles but it wasn't anything different as with other guyfriends so i had my arm around her and she was laying on my shoulder and I was dozing off but not out yet. She kissed my cheek and I felt it but didn't move and fell asleep so she didn't feel awkward knowing in was aware of what happened.
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Should I talk to my female friend about why she kissed me on the cheek? She thought I was asleep?
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