I think you might be right about the song, but I don't think that's the right artist. I looked up the song on iTunes, and there's more than one version of that song by more than one artist. I listened to the one by Bobby Matos, and it sounds close but it's not quite right.
I have to respectfully disagree, I still do not think that this version of the song is by Bobby Matos. I actually have the version by Bobby Matos, and these are some of the reasons I don't think it's the right one:
It has a jazzier sound.
The piano sounds different.
The cha cha section is much, much faster than the one in the video.
EDIT 2: Ok, I take it back, looks like both Spencer and Artist might be right. I also found this version of the song, also by Bobby Matos, so I guess Bobby Matos has more than one version of the song. The version on iTunes is far inferior in my opinion.