Please Help The Title

Its uhm, an latin I guess, cos it is use as uhm, telenovela series ost...(if it could help, the telenovela is about three sister with one of them is a nurse...yea) its singing by male group, uhm...the lyrics all i know is...numero uno
and uhm, i think there is also a english version of it.....

its slow one, sweet, i really desparate to find this song but dunno where to look... so pleaseeee heeelpppp

oh please anyone help me with the title..(beggin)

still about the same song that i just cant forget...

it is a ost of a latin series (telenovela). the story about three sister which the main character work as nurse "yea, i think so, with that black shiny hair, beautiful) whoa sorry...

uhm the lyrics that attach in my head only... Numero uno....

its sweet song, slow and i think there is an english version of it, really stuck to find it cos i love to hear it....

so pleaaseeeeeee....help me