04/24/2013 01:41 pm ET

Captain Jack And River Song Met, Decided They Want A 'Doctor Who' Spinoff

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Captain Jack met River Song and now, they want a spinoff.

John Barrowman, the man who brought Captain Jack Harkness to life on "Doctor Who" and its spinoff "Torchwood," told The TV Addict that he and Alex Kingston, who plays River Song on "Doctor Who," met at a party and instantly hit it off.

The two, who have both appeared on The CW's "Arrow," met at theater producer Cameron Mackintosh's house in London for an anniversary celebration.

"We didn’t even say anything, we just looked at each other and went, 'Aaaaaahhh! My god!' We got a glass of champagne and started talking about how it would be great if River and Jack -- actually, she said River and Jack should have their own TV show," Barrowman said. "Then as we talked more, we realized that we're both born on the same day. We're both March 11 babies and we have so much in common. We like a lot of the same things and our attitude towards stuff is very, very similar. It struck a chord with us because that’s why River and Jack are very similar characters, in their attitude and their fun and their aggression, we are the same in real life -- which is really ironic."

Kingston returns as River Song in the "Doctor Who" Season 7 finale, titled "The Name of The Doctor." Series executive producer Steven Moffat said there will be a revelation.

"I’m not teasing. I’m not wrong-footing you -- you’re about to learn something about the Doctor that you never knew before," "Doctor Who" Moffat wrote in his Radio Times episode guide. "And I think you're in for a shock."

"Doctor Who" will celebrate its 50th anniversary with a special featuring series stars Matt Smith, Jenna-Louise Coleman and past stars David Tennant and Billie Piper. Barrowman won't be a part of the special for one reason: He wasn't asked.

“Everyone on Twitter tries to make it like it’s my decision, but the bottom line is I was not asked,” Barrowman told TVLine. “[The Powers That Be] don’t want to put Jack in it. And I know fans are really upset about it, as was I."

"Doctor Who" airs Saturdays, 8 p.m. ET on BBC America.

"Doctor Who" Season 7