Date night: Chris Harrison and Justin Bieber's mom

2:09PM EST October 5. 2012 - Hmm. Could this be a hot couple alert?

Bachelor host Chris Harrison, 41, and Justin Bieber's mom, Pattie Mallette, 36?

They're both single.

Harrison split from his wife Gwen Harrison in May after 18 years of marriage. They share two children together, son Joshua and daughter Taylor. And Mallette, who is doing interviews to promote her new book, told Ellen DeGeneres this week that she's been focusing on her son and his career.

And they set up — they went to Justin Bieber's Staples Center concert — by Ryan Seacrest, according to tweets by all involved.

On Wednesday night, Mallette tweeted: "Had a great night w @chrisbharrison! Thanks @ryanseacrest for setting it up.

And within a few minutes, Harrison re-tweeted: "Great night & show RT @pattiemallette: Had a great night w @chrisbharrison! Thanks@ryanseacrest for setting it up."

Seacrest replied to Pattie with: "Does he get a rose?"

No reply on that, yet.