Real World Ex-Plosion has officially blown up as the exes of the original cast members made their debut in an episode that aired Wednesday, Jan. 29th.

The first co-stars spent the first couple of episodes flirting with their housemates, which made their reactions to seeing their former flings in MTV's newest installment of Real World was priceless.

But the exes who were surprising their previous significant others could not be more excited.

One ex walks in and sees a number of other people sitting around in the kitchen and asked "What's going on?"

A fellow ex answered "We're all exes" while another chimed in and said, "We're the surprise...We're all in the same boat."

Their faces revealed they couldn't wait to see their exes' reactions to them not only being in the house, but a part of the cast.

"I think it's gonna be awesome...I can't wait," one said.

As if right on cue, their exes pulled up to the house, not suspecting a thing of course.

After they walked in they did see one of the exes sitting near a kitchen counter but just brushed him off as a new roommate.

His unexpecting ex-girlfriend didn't even recognize him. She said, "I'm walking into the house and I'm seeing muscles and I'm seeing hair and I'm like 'Man that guy is hot'"...

When he turns around and reveals himself as her ex, her reaction changes to "what.the.f---. My ex Brian is here."

Then all of the exes jumped out.

Take a look at the clip here and check out new episodes on Real World Ex-Plosion on Wednesdays on MTV at 10/9c.

Tags: Real World Ex-Plosion MTV Reality TV