Eat your heart out, JB!

Selena Gomez posted these bikini shots on Instagram to illustrate how "great life is" lately, and we have a feeling Justin Bieber took a peek when Hailey Baldwin wasn't looking!

The Biebs' fiance might have gotten the ring, but she's secretly concerned that the "Come & Get It" songstress could steal her future husband away from her at any moment.

"Hailey does not want to put any sort of pressure on Justin to rush this wedding, but it’s hard for her not to wish that they could just get married tomorrow. She feels the sooner she can get married to Justin the better, because she’s convinced that saying their vows and making a formal commitment will be the final push [to ensure that] Selena stays out of their lives forever," a source dished to Hollywood Life.

"Hailey lived through Justin going back and forth between her and Selena for so long, that it’s hard to get out of the habit of thinking about the ‘other woman.' Hailey feels like the stakes are high because Selena could always be quietly watching and waiting for things between Hailey and Justin to fall apart again. So the sooner Hailey can [get married], the more secure she’ll feel about their future together, without Selena," the source added.

We still have a sneaking suspicion we haven't heard the last of Jelena!

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