lovey-dovey
From Longman Dictionary of Contemporary Englishlovey-doveylovey-dov‧ey /ˌlʌvi ˈdʌvi◂/ adjective informal LOVEbehaviour that is lovey-dovey is too romantic a lovey-dovey phone callExamples from the Corpuslovey-dovey• The newlyweds were acting all lovey-dovey.• But the lovey-dovey conversation didn't even dent readers' affection for the caring Princess.