My best friend' girlfriend naked
I am a high school (guy) senior and i have this best friend of mine who is bisexual and she goes out with this one girl who is also in my school. When we were in our sophomore year in high school, i asked my best friend if i could use her ipod nano while she was talking to her guidence counselor while i was sitting in our computer class. so i texted asking her that and she said "yea sure =]". so i opened her backpack trying to look for it, and then i saw naked pictures of her girlfriend right there. I was surprised. i actually stared at them until she came back from her talk. I have kept it a secret from that moment on. I still have it a secret. Now i can't look her normally because i was so shocked to see that. Should i tell my friend that i saw here girlfriend naked or should i keep it a secret? IIN?