Justin Bieber Takes Pictures of Bikini-Clad Selena Gomez

Justin Bieber wants to remember everything about his trip to Cabo San Lucas, Mexico -- including how sexy his girlfriend Selena Gomez looks in a bikini!
On Wednesday, the Canadian pop star snapped a series of photos featuring his 19-year-old girlfriend wearing a sexy blue two-piece. The couple's romantic getaway comes just weeks after Bieber, 17, took a DNA test to prove he did not father a child with superfan Mariah Yeater.

This is hardly the first time Bieber and Gomez have engaged in a little poolside PDA. In May, a bikini-clad Gomez was photographed straddling her love of one year while vacationing in Maui, Hawaii.

Will the pair's relationship stand the test of time? "If the time is right, I definitely want to be married by 25," Bieber told Women's Wear Daily in September. "[But] I'm not looking to get married now."