U.S. Swimmer Lilly King Gets Engaged At Olympic Trials

lilly king proposal

It's been a great week for U.S. swimmer Lilly King -- the soon-to-be 3x Olympian is looking to add more medals to her trophy case -- and now she's got a big, ol' shiny diamond ring ... after her boyfriend proposed to her poolside at the Olympic trials!

(She said YES!)

The wholesome moment went down on Day 6 of the U.S. Olympic Swimming Trials in Indianapolis on Thursday. Shortly after qualifying in the 200-meter breaststroke (the second Olympic race she qualified for), King was greeted outside the pool by her now then-boyfriend, James Wells.

As James started to talk, King joked about her friend telling her to put her hair down, as the 27-year-old began to realize she was…