Just

CPY, when you really love something. I think you love it very much. And if "I just love new year holidays!" Then I guess it means that .... "I love new year holidays very much. I think you say the word "just" intensifies "the degree of love". But I don't understand why you don't approve if I say ....

I just love it = I really love it = I love it very much = I extremely love it.

?