The two were spotted together on Saturday at a restaurant in McAllen, Texas, and restaurant manager Lori Johnson told People that the two were very affectionate.
"Selena Gomez and Justin Bieber came in...for breakfast," Johnson said. "They were kissing. They were sitting next to each other and hugging and kissing in front of the staff. They weren't hiding it and seemed to be boyfriend and girlfriend."
The two reportedly visited Xtreme Lazer Tag later that day, and site marketing manager Ruben Elias told Hollywood Life, "They were kissing in the dark area... They basically hid out in there, stopped their game of laser tag, and were locked in a full-on makeout session."
"They...had some full-on PDA," Elias added. "They were really enjoying each other's company and Selena was smiling from the time she walked in to the time she left. Justin was going the extra mile to make sure she was doing well."
Rumors that the two might get back together began earlier this month when Bieber posted a photo on his Instagram of Gomez in her Oscars after-party dress. He captioned the photo, "Most elegant princess in the world." Fan interest was piqued after the post, but sources told media outlets that Gomez was not impressed by the display or interested in Bieber. Speculation was renewed when Bieber had a violent reaction to a lawyer's questions about Gomez during his deposition in Miami.
The two were seen together over the weekend at several other locations in Texas, including a perfume store, Starbucks and a dance studio. Gomez was in Texas to perform on Saturday night in Hidalgo.
The two have not officially announced that they are back together.