lovey-dovey
adjective informal disapproving uk/ˈlʌv.iˌdʌv.i/ us/ˈlʌv.iˌdʌv.i/
（在公开场合）卿卿我我的，过分亲热的
If two people in a romantic relationship are lovey-dovey, they show their love for each other in public by touching each other and saying loving things.