there are plenty of fish in the sea

US /ðɛr ɑr ˈplɛn.ti əv fɪʃ ɪn ðə siː/
UK /ðɛr ɑr ˈplɛn.ti əv fɪʃ ɪn ðə siː/
"there are plenty of fish in the sea" picture
1.

used to tell someone whose relationship has ended that there are many other people they could have a relationship with

:
Don't worry about your breakup; there are plenty of fish in the sea.
After she broke up with him, her friends reminded her that there are plenty of fish in the sea.