"it sounds mushy-gushy" - could you provide explanation?

“it sounds mushy-gushy” - could you provide explanation?

mushy-gusht = excessively emotional, excessiverly effusive, in Russian: чересчур сентиментальный, чересчур благоговейно к чему-то относящийся.
We can use these words also separetely: a mushy movie, gushy manner

спасибо, Евгений!