2-3-4!   It must've been   It must've been my boy   It must've been my boy   It must've been my boy   It must've been my boy   It must've been      There's this guy.....   You see, he's got all the girls talkin'   Makes 'em sweat   Just by the way he's walkin'   They wish they had him   But, they never will   'Cause there's just one boy I know   Who can give 'em that extra thrill      BRIDGE:   Oh, sweet jealousy   Is this revenge?   'Cause it's me, me, me   Who'll be holding him   Tonight      Yeah!      It must've been my boy   It must've been my boy   (yeah, yeah, yeah, yeah)   It must've been my boy   It must've been my boy they're talkin' about   It must've been my boy   It must've been (yeah, yeah)   It must've been my boy   It must've been.....      There's this girl named Genevieve   I know what she's got up her sleeve   Think she can steal his heart from me   But that's an impossibility   She's only good for just one thing   But me I get to wear his ring   People are talkin' in the street   About the guy who gives off the heat      BRIDGE      It must've been my boy (it must've, must've)   It must've been my boy   It must've been my boy (it must've, must've)   It must've been my boy they're talkin' about   It must've been my boy (who else could it be? yeah!)   It must've been my boy (ooh baby baby)   It must've been him that's got them talkin'      He's a class-A lover   There's no other   He's the original Romeo   Leads the other boys   Shows them where to go      BREAK:   Listen up!   Keep your hands off   Got it?   He's my boy   Got it? Good! Huh - Yeah.....      BRIDGE:   Sweet jealousy [laugh]   This is revenge   'Cause it's me, me, me   Who'll be holding him   Tonight      Yeah!      It must've been my boy   It must've been my boy   It must've been my boy   Who else could it be?   It must've been my boy   It must've been my boy who's got them talking   About the way...   C'mon baby, make the other girls crazy   Baby, yeah!      Must've been my boy they been talkin' about   Must've been my boy who's been turning it out   Must've been my boy they been talkin' about   Must've been my boy   Turn it out baby.....whew!   It must've been my boy (must've, must've)      It must've been my boy   Get on the streets and get on   back home where you belong   (It must've been my boy!)      OK?   Yeah   Thanks.....