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Say what???!!!

Jenny McCarthy and Donnie Wahlberg have been dating for a few months and The View co-host just can't keep her mouth shut about how in love she is with Marky Mark's bro. She's already told the world she things Donnie might be "the one" and that he's "everything [she] could have asked for." Get a room, already!

The 41-year-old former MTV'er has now exposed further plans ... telling talk show host/reality star Bethenny Frankel in a segment set to air Monday, "I think [Donnie] would be an amazing husband!" she boasted. "So, if he does [propose] yea, I would sure say yes. I wouldn't be surprised if I was the one proposing!

Uh, Jen -- every heard of keeping it on the DL and playing a little hard to get?

bethennyjenny.jpgMike Coppola/Getty Images for Bethenny