It has been a whirlwind week for Justin Bieber and Selena Gomez. The newly-reunited couple capped off their week of parties and dinner dates with a romantic trip to the Los Angeles Zoo on Sunday.

Jelena strolled through the zoo with an entourage that included Justin's grandparents, Bruce and Diana Dale. The couple was all smiles walking in the great outdoors, seeing animals up close and even cuddling on the zoo's shuttle!

Genie Vasels, who spent the day with Justin and Selena, explained to that the pop star wanted to do something really special for his grandparents, who were visiting from Canada.

"Justin was a complete gentleman and just so polite with everyone," she revealed.

"He was really affectionate with Selena, and she seemed really happy. They were holding hands constantly. It was really sweet. They both looked super happy together. They looked relaxed and comfortable together," Genie added.

Wish you could have been there? Lucky for us, some fans captured all the romance. Click through to see the adorable photos from Jelena's zoo date, and tell us where you think Justin and Selena should go on their next date in the comments below!

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