Justin Bieber cheers on U.S. Olympic gymnastics team, swimmer Missy Franklin

(CBS News) Justin Bieber is showing his love for the Olympics, and it's not just Canadian teams he's behind. He's also rooting from Team USA.

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After the 18-year-old pop star congratulated Canadian gymnast Dominique Pegg, he tweeted about swimmer Missy Franklin, who scored a gold medal this week in the 100-meter backstroke. The 17-year-old Olympic champ is apparently a Bieber fan.

Franklin then retweeted Bieber's message, adding, "I just died! Thank you!"

Bieber also sent congratulations to the U.S. women's gymnastics team after they won Olympic gold on Tuesday.