'Sugar' Shane Mosley -- GF Makes Boxer Her Bitch ... On Camera

‘Sugar’ Shane Mosley chalked up 47 wins during his incredible boxing career (knocking out 39 fighters) but none of it mattered this weekend when his GF made him her bitch -- right in the middle of a Hollywood street.

Mosley -- who held 6 world titles -- was talking shop with our photog outside Katsuya in Hollywood ... when his girlfriend Bella Gonzalez decided it was time to go -- and shut the whole thing down.

Mosley – who went toe-to-toe in the ring with the likes of De La Hoya and Floyd Mayweather Jr. – TRIED to stand his ground and continue the convo with TMZ ... but Bella wasn't havin' it.