You shouldn't share photos without permission.
Vanessa attended Willow's wedding and took lots of nice photos on her phone during the reception.
Vanessa wants to post the photos on her social media.
Vanessa asks Willow when she can post the photos she took of the wedding and waits until Willow says it's okay.
Vanessa posts the photos on social media as soon as she gets home from the wedding.
Vanessa happily shares her photos with everyone and doesn't upstage Willow's official photos.
Willow is upset that Vanessa is sharing photos of her wedding without permission and stops being friends with Vanessa.