Christine-Denis album?

[aleuzzi]

I just read the following tidbit in a FM article at khits.com:

Did you know?

• In the late-1970s Christine McVie laid down an album's worth of professionally recorded demos and full blown studio tracks both written and performed with then-boyfriend, the late Beach Boys drummer Dennis Wilson.
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How true is this? I apologize if this has been discussed and/or noticed here before.