Hey all, I need your help finding a song 😭

I just randomly remembered an old song, but neither chatgpt nor google assistant could find it (even humming search didn’t help, and I actually remember the melody 😅). So, apparently, it’s a very old and not very famous song.

All I remember is that it was a guy singing, kind of emotional / r&b vibe.

Some parts of the lyrics go like:

“Why, why are you saying goodbye and running away from my life…
Why, why won’t you let me explain, without you I am going insane, tell me…”

Another part was something like:

“... I’ll give you all I have, girl I can’t let you go…”

and it ends with something like:

“please tell me why… whyyy… oh whyyy…” 😅 😅

That’s literally all I remember 😭
Please help me find it, it’s stuck in my head 😅