Justin Bieber and Selena Gomez hangout (Photos)

Justin Bieber and Selena Gomez had quite a weekend away from her boyfriend, The Weeknd ...  They grabbed breakfast together Sunday morning and later attended church.

According to TMZ ,this is the 3rd sighting recently where the 2 exes have hung out ... again, with Abel nowhere in sight.

Justin was just at Selena's house last Sunday ... and stayed 'till midnight.Selena's BF was fully aware of them hanging out, and we're told he's totally cool.

 “He visited her at home last week,” the source tells PEOPLE. “They spent a few hours together as friends. He was very worried after learning about her kidney transplant. He is so relieved that she is doing well.”