“It’s that Sik Luv” likely refers to a feeling of deep affection or appreciation for something or someone, expressed in a casual or slangy manner.
“Sik” could be a stylized spelling of “sick,” which is often used in informal contexts to mean “cool,” “awesome,” or “impressive.” “Luv” is a slang term for “love.”
So, “that Sik Luv” could be interpreted as a colloquial way of expressing admiration, enthusiasm, or passion for a particular person, thing, experience, or concept. It suggests that whatever is being referred to is highly valued and deeply cherished by the speaker.