We use this expression to describe an affectionate couple who show everyone how much they love each other, how much they care about each other and how much they are excessively in love.
We can also use lovey-dovey to talk about romantic love or sentimentality.
Let’s see some examples :
– Oh! look at them, they are so lovey-dovey.
– I’d tried to be lovey-dovey with you but you always screw this up.
– Yeah! we look a little bit lovey-dovey but trust me, we are not.