online dating
noun [ U ] uk/ˌɒn.laɪn ˈdeɪ.tɪŋ/ us/ˌɑːn.laɪn ˈdeɪ.t̬ɪŋ/
网恋
a way of starting a romantic relationship on the internet, by giving information about yourself or replying to someone else's information
an online dating website 提供网上约会的网站