Social Media Use

A social media provider, Clutter, collects data from user posts about relationships. Using the data, Clutter then pushes ads targeting users based on the stage of their relationship. For example, a female user posted a selfie and added the caption heading out on a blind date. Clutter then provided the data and other similar posts to a company that then pushed ads entitled Make that first date special: clothes and make-up to wear. Another user posted a sad face emoji when a friend asked how his relationship with his fiance was going. Clutter gave that data to companies that used to push products for grieving hearts.

What are the ethical and legal issues in Clutters use of the data? (pls do not outisde sources like AI as I had issues deal with)