Floyd Mayweather parties with girlfriends before training camp, showers birthday girl with gifts: Shantel Jackson break-up real, engagement officially off? [PHOTOS]

Undefeated boxing champ Floyd Mayweather gets down to business on Monday (March 3), when intense training camp officially begins. But Mayweather made sure he left his infamous partying days behind with a bang - by celebrating with all five of his rumored girlfriends. And no, Mayweather's rumored (former) fiancee Shantel Jackson was not in attendance.

The infamous gossip webloid MediaTakeOut.com reports that the legendary fighter threw a massive birthday party for one his leading ladies (Jessica Lee) over the weekend. She just turned 33-years-old. Check it out:

floydmayweather: "@thatjessilee birthday party last night... so many different pieces, it was hard to put the puzzle together."

According to MTO, the luxurious party was held at Las Vegas' popular Haze nightclub. Miss Lee spent most of the night celebrating with her close "sister wife," Doralie. The rest of the "Money Team" was also in attendance.

The birthday girl was also spotted flaunting a very expensive-looking new watch - probably a gift from her "main squeeze."

thatjessilee: "Thank u @floydmayweather for an amazing party!!! I had a blast!!!!" 

Rumors initially suggested that Mayweather was set to wed longtime girlfriend Shantel Jackson, but apparently that's not happening anytime soon. As Mstars previously reported:

Floyd Mayweather's engagement to on-and-off again girlfriend Shantel Jackson is officially over. The world champion boxer just can't settle down with one leading lady, and it's ruining his chances of ever starting a family.

The infamous gossip webloid MediaTakeOut.com reports that Jackson actually broke-up with Mayweather a few months ago. She wanted the 36-year-old fighter to be "100% faithful" in the realtonship, and that just wasn't happening.

Alleged insiders claim that Mayweather wants to keep his romantic relationships open (aka, hook-up with as many women as he pleases).

In fact, Mayweather even offered Jackson an ultimatum. He'd marry her (and not even require a pre-nup) if she'd allow him to carry-out these "flings" with other side-chicks. But Jackson wasn't hearing it, so she dumped him.

But the stunning aspiring actress is still "in love" with Mayweather, so she's willing to take him back... as long as he agrees to remain monogamous.

Wonder if that'll ever happen?