#BobArum "#AlHaymon is a CANCER!" | #OscarDeLaHoya throws birthday party for his "girlfriend"

Summary: Oscar De La Hoya loves his girlfriend sooooo much ... he rented out an entire bar and threw a kick-ass party for her birthday ... and TMZ Sports has the vid!!<br><br>Sources tell us the Golden Boy booked the White Horse in Pasadena last weekend for Anna Valencia's 30th ... decking the place out in a casino theme, complete with blackjack tables and chips featuring her face!!<br><br>We're told the boxing champ footed the entire bill for the night (even the open bar) -- which he can definitely afford after putting together the largest contract in the history of pro sports. <br><br>Remember, it was Golden Boy that negotiated Canelo Alvarez's $365 MILLION fight contract with DAZN ... in which Canelo will take 11 fights over 5 years. Oscar's cut has gotta be pretty sweet. <br><br>As for Valencia, she's a model and an actress ... and has even done work with Golden Boy Promotions as an on-camera reporter.<br><br>The couple has been dating since earlier this year ... and by the looks of it, they couldn't be happier.<br><br>Happy birthday!!