At the ripe old age of 27, Michael Phelps may be retiring from Olympic swimming, but he certainly won’t be lonely.

On Monday, Us Weekly reported that Phelps has been dating 25-year-old Los Angeles-based model Megan Rossee for about five months.

The gold medal-winning athlete, 27, and his model love of five months, walked the red carpet together during a Speedo event in London Monday night.  Though they proudly posed for pics, Phelps refused to answer when reporters asked him about his current relationship status.

Rossee had been showing her support for the swim champ as he finished out his third and last Olympics in London over the past two weeks.

"Good luck tonight bear," the 5-foot-9 stunner, who has walked in Michael Kors, Betsey Johnson and other designers' runway shows, tweeted on August 2 in response to Phelps' own tweet, "Last prelim swim complete... 2 big ones tonight..."

On Saturday, Phelps won his 18th overall Olympic gold for the 4x100 medley relay, bringing his career medal count to 22. That makes him the most decorated Olympian of all time.