Family bonded over shared experience.
Meaning: This means the family members became closer because they shared the experience of watching the film together.
Choice of Words: Bonded means to form a close relationship with someone. Over means above or on top of something. Shared means belonging to or used by two or more people. Experience means an event or occurrence that leaves an impression on someone. When you put them together, "Family bonded over shared experience" means the family members formed a closer relationship with each other because of the movie they watched together.
Alternative Expressions
Related Expressions