Justin and Selena were together two years. Copyright: [wenn]
However, we think the sighting gives us two possible options.
Yes, maybe they are back together and deeply in love etc, but equally maybe she is going round to do the mega awks collecting stuff trip that every ex couple dreads.
[Related Story: Justin Bieber opens up about 'hot girlfriend' Selena Gomez]
[Related Story: Selena Gomez calls Justin Bieber a 'jerk']
However, seeing as she did reportedly stay the night then she must have A LOT of stuff to collect...
Selena reportedly chucked Justin after she found him to be just 'too immature' for her.
A source said: "Justin is super needy and can be a big baby around Selena."
"It's hard for him to make real friends because he likes the temporary attention of strangers, but didn't see how it hurt Selena."
Selena was believed to be sick of Justin constantly being pictured out and about with other girls.
"Selena didn't feel Justin was respectful of their relationship. She was constantly catching him in positions with other girls that would make her uncomfortable."
Since the split, Selena has vowed that she wants to make s 'fresh start' and enjoy herself.
Th actress recently told an interviewer: "I'm good. I'm really good. I've been recording, having a lot of fun with my girlfriends, having a good time."
Meanwhile, poor old Bieber has admitted that he is struggling with the break up and said last week: "I'm not in the happiest place that I've ever been."