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The so-in-love couple gets romantic at her friend’s nuptials — they are TOO adorable together!

Justin Bieber and Selena Gomez have been having so much fun on their Mexican vacation, and they made their biggest splash yet by going to the wedding of her dear friend Shannon Larossi!

Justin, 17, and Selena, 19, attended the beautiful beachside nuptials in Los Cabos, where Selena was a picture-perfect bridesmaid. Justin was so supportive as well, with his arm around her all night!

What do YOU think, HollywoodLifers — will Justina and Selena be the next to marry?

– William Earl

More Justin & Selena:

1. Justin Bieber: You Work So Hard — You’re An Amazing Role Model For All Young People!
2. Justin Bieber Has A Heart To Heart With His Girlfriend’s Dad: ‘I’m A Good Distraction’
3. Justin Bieber Spending Christmas In Canada — Will Selena Gomez Join Him?