Colbie Caillat has more reason to feel blessed because she is not just celebrating her 30th birthday, she is also engaged to her longtime boyfriend Justin Young.

Justin popped the question during their trip to Bermuda and the "I Do" singer will finally say her own 'I do' as she accepted the proposal of the 36-year-old guitarist.

The musicians were on a holiday with friends for Colbie's birthday bash. She uploaded a photo on her Instagram account, where a huge rock can be seen on her ring finger and fans suspected that Justin proposed.

She captioned "Thanks for all your sweet birthday messages!! :) Hi from windy Bermuda!......where my hair is attacking everyone! #colbieandchristina"

Colbie confirmed the speculation when she posted a picture of her and her husband-to-be. They were on the boat and she was leaning on Justin's shoulder and a glimpse of her engagement ring can be seen.

"This sweet man asked me to be his lobster....and I said yes :) #colbieandchristina," Colbie captioned the photo.

Her post was then compared to a famous line from the comedy TV series 'Friends,' where Phoebe (Lisa Kudrow) told Ross (David Schwimmer) that Rachel (Jennifer Aniston) is his lobster because, according to Phoebe, lobsters fall in love and mate for life.

Young and Caillat became an item in 2009 while touring, she told Billboard in 2011. She was promoting her 2011 album, "All of You," which included the hit single is "I Do."

"We feel very lucky that we get to go on tour with each other rather than other people who have to leave their significant others at home," she explains. "It's really special. It's like having your best friend everywhere with you. Other people are like, 'How do you do it? I'd want a break' and whatever. I guess we just have that kind of bond. We actually enjoy doing it."