there are plenty more fish in the sea idiom
mainly UK (US usually there are plenty of fish in the sea)海里的鱼有的是;还有很多合适的人(或机会)
used to tell someone whose relationship has ended that there are many other people that they could have a relationship with
Don't cry over Pierre - there are plenty more fish in the sea! 别为皮埃尔哭了,天下的好男人多的是!