PLEASE HELP!!!! Going crazy Need Artist/Song Title

PLEASE HELP! I have looked everywhere, emailed radio stations etc...and NOTHING!
This was a slow song played in the mid-90's on R&B stations. It sounds like a female group, and there is a male singing at the end who sounds kind of like Keith Sweat.
The song starts out with one female singing:

Boy I wonder what I did wrong
for you to treat me like you do
my heart is hurting boy so bad
baby you know
???????????

Chorus goes:

it hurts me to know you're doing me wrong boy
it hurts me so bad

2nd part female singing:

Stop and think just for one minute
'cause you know I know I deserve better than this
wasn't I there wasn't I
when you needed someone
please baby don't do me like this
???????
I don't want nobody nobody nobody to take my place

At the end the male sings:

let me tell you girl
the time has come for me to leave you baby
I thought we could make it last forever baby
but baby I got to leave
bye baby bye baby bye bye


I hope someone can help...I have searched under every R&B group and lyrics sites I could find. *thanks*


, October 30, 2004; 2:00 AM