Justin Bieber & Selena Gomez -- Together Again for God ... But Not for Each Other

Slow down, Jelena fans -- yes, Justin Bieber and Selena Gomez hung out Wednesday night ... but they are not dating again. Not yet anyway.

The reunion of everyone's favorite on-again/off-again set the Internet on fire, but here's what really went down.

Pastor Rich Wilkerson Jr. -- who counts Bieber and the Kardashians among his flock -- posted a series of videos from a gathering Wednesday night in L.A. ... and both Bieber and Gomez were there.

According to our sources, the exes were cordial, but that's it. In fact, Bieber brought rumored girlfriend Hailey Baldwin with him -- another sign there's no reunion on the horizon.

We're told this isn't the first time Bieber and Gomez have been together lately -- they've both been to a few of Pastor Rich's gatherings in recent weeks.

So, no romantic sparks for now. Give it time, they'll be back together -- and broken up again -- eventually.