there are plenty more fish in the sea

There are plenty more fish in the sea. (There are plenty of other people to meet.) — свет клином не сошелся

Used to say that there are many other people or possibilities, especially when one person or thing has been unsuitable or unsuccessful; often said to try to comfort (usually unsuccessfully!) someone who has just lost a partner.

Example: Don't cry over her — there are plenty more fish in the sea! — Не переживай так из-за неё — на ней свет клином не сошелся.

see also
[not the only pebble on the beach]