Please, I need help with this! Song's name and Artist?

Hi! I'm trying to find who sings and what is this song's name... i
only remember some words of the song... i think it is a slow from the
70's or 80's...
"start to shine tonight I believe in that don't you know?"
"I'm loving you so why don't you see? i always need you touch (...)
loving you..."
I think this is the refrain but i'm not sure.
If it helps, it was recorded on a k7 named "Slows de Exito",
commercialized in Portugal...

Please help me!