90's r&b girl group

okay, so for years I've been trying to find this song; problem: I don't know the artist or title. What follows is what I do remember of the lyrics

summer lovin
summer fun,
making love in the summer sun
sometimes you win, sometimes you lose
its all about life and the love you choose
so hold on tight if you think its right
as longs as it keeps you satisfied and singing
na na na na,
na na na na na na

the lead singer vocals are low -sort of like t-boz from TLC. Its got a laid back vibe, basic and repetative. From the early 90s? I remember it from highschool.
PLEASE HELP!!!!!

thanks

i think its Vybe - Warm summer daez

Excellent Find, Coco!