પલ પલમાં કરે પ્યાર, પલ પલમાં પલટે પરા;

pala palamāṁ karē pyāra, pala palamāṁ palaṭē parā;

Literally: Who loves in one moment, and turns away in the next moment.
What it means: Said of an unstable, fickle, or opportunistic person whose affection changes with every passing second.

Also said as

ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1923) · read from the scan by machine — the Gujarati itself is unchecked · English is machine-made and nobody has checked it yet

Heard it differently, or know we've got the sense wrong? Tell us — that is exactly the kind of correction this needs.