CRISTIANO RONALDOKISSING SMOKIN' HOT MYSTERY CHICK... At Miami Pool

Kiss-tiano Ronaldo????

Seems someone has finally tamed the tan stallion ... because Cristiano R0naldo was getting VERY up close and personal with a hot blonde in Miami this weekend ... and even planted a kiss on her!

The two were all about the PDA -- holding each other in the pool ... and literally getting on top of each other on the deck chairs. 

At one point, a smokin' hot friend came over and began smackin' the lady on her butt -- and no one complained. 

Despite all the attention, Ronaldo has yet to put her on his Instagram page -- so, it's not official ... at least not yet. 

Photo credit: Lunch gallery

Source:TMZ