The singer holds both the why and the I. It may or may not be part of the song but I think it also has a segment where the singer goes up a pitch?
Edit: the parts I remmeber sound like and it has a very laid back instrumental track, focusing the voice:
but Whyyyyyyyyyy
do you keEep coming back to meeee
and Iiiiiiiiiiiii
*unintelligible

On the radio!
Which radio station? Every clue can help people help you 😁
Oh, I remember seeing it too on the YouTube music playlist Neon: Pop Hits ~2 months ago. I checked but it is no longer there
No idea sadly, it was on a supermarket radio. Mostly pop stuff.