Lord Shiva loves Lord Vishnu the most, because Lord Vishnu is the Ishta-daiva of Lord Shiva. Even before Lord Shiva married Mother Parvati or Mother Sati, he was a Parama Vaishnava (a supreme devotee of Lord Vishnu).
I once read on Quora that in a certain Purana it is mentioned that Lord Vishnu told Lord Shiva that he would take birth as Parvati or Shakti and marry him to assist him in the process of cosmic destruction. In support of this idea, it is said that Mother Parvati was Krishna-varna (bluish-black in complexion famously known as Kaali) at birth, and after performing intense tapasya she became Gaura-varna (fair or golden in complexion) and hence known as Gauri.
Infact Bengalis also believe that Lord Vishnu is Mother Kali and it’s famous as Krishna Kaali.
A certain sect of Vaisnavas called as Madwas see Mother Kaali or parwathy has a special avesha of Govinda in her which makes her indifferent from Govinda.
And yea Even Lalita Sahasranama have a name Govinda Roopini
Even Famous Premanandji Maharaj of Vrindavan has spoken about a similar idea, saying that Lord Vishnu manifested as Parvati and that Lord Shiva manifested as Radha Rani.
Hare Krishna
Har Har Mahadeva
Jai Bhagwathy Lalitha