Justin Bieber — Selena Gomez Still On The Brain … And The Screensaver!

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Justin Bieber is not over Selena Gomez … in fact, she”s still very much in the palm of his hand.

We started looking closely at pics of Justin … and we came across this one (left) of Justin leaving a museum in Amsterdam, and his sorta ex-GF was along for the ride … as the screensaver on his iPhone.

Justin”s background image of choice is clearly a pic of Selena. The sultry pic is from a March 4 photo shoot, our sources has learned.

Only question is … did she send it to him, or was he keeping tabs on her

As our sources reported yesterday, she flew into Oslo, Norway, to hook up with her on-again, off-again.

Now it”s clear … their continuing obsession is DEFINITELY mutual.