Justin Bieber and Selena Gomez are definitely back on, and things seem to be going great! The couple toured the LA zoo on Sunday with Bieber's grandparents, and their tour guide Genie Vasels gave all the details to Us Weekly!

"A mutual friend actually called me on Friday to say that Justin's grandparents were in town," she told the mag. "He wanted to do something special for them and wanted to come to the zoo."

The group drove through the zoo and observed "gorillas, orangutans, elephants, river otters, and a harpy eagle." Bieber allegedly "loves tigers and bears" and "wanted to see elephants for sure."

"That's when people started going crazy," Vasels recalled of driving the stars through the zoo. "I've never seen anything quite like it. We tour a lot of celebrities...and this was the most frenzied I had ever seen." 

She said the "Boyfriend" singer "did a really sweet thing" for one disabled fan.

"In front of the piranha tank, there was a little [disabled] girl in a wheelchair," the tour guide explained. "Justin walked over, put his arm around her, and asked the family to take a picture... that was his own volition. He wasn't asked to do that, he just did and it was very sweet. You should have seen the look on this little girl's face."

Everyone is said to have had a great time, and Jelena showed affection towards each other, but "not in a sloppy way."

"[They] seemed very respectful of each other and very relaxed," she said. "They were holding hands and hugging."

It appears the on/off couple is taking a different approach to their relationship this time around. It was reported last week they attended bible study together in LA.

We are so happy they are getting along! Do you like Jelena together? Let us know why or why not below!