Found photo of girlfriend blowing her ex, what would you do?

I came across a photo on my girlfriend phone and its of her blowing her ex boyfriend. Its from over 5 years ago but Im not sure how to feel. She has told me all the photos of her and the ex are deleted a couple of times but clearly not. She said she must have missed them when she was deleting, it was the BJ photo and like 8 regular photos all from back then. I really dont think she kept them on purpose but am I stupid? Im not sure how to feel, she did delete them without hesitation too when I showed.

Found photo of girlfriend blowing her ex, what would you do?
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