Yeah? No? Yeah? No?
Yeah? No? Yeah? May-ay-ay-be!
I knew me when:
I knew me when
Write, alone. She? --
-- No girl of my own to write of
(One who can ken....) 
I knew me when
I wrote bad things all alone
But FG said, "Let's have some fun 
"My mind is small; Yours, loan?"
We did one
"Impart, along (I've none, dear me):
"In chat, ideas; (I fear it's so)"
They all loved our busting Don McLean
Yeah? Not? Why? Bleah-eah-eah-eah!
You let this hen
Said "This sharp pen
"Must be phony
"No girl, on her own, match thereof
"It's Tom, again" 
I know her now
She's used to TT's rotten pun
But somehow, she comes back with more
Like mine: a groaner, Hon!
I knew, back then:
Knew I must be paired: Fiddlegirl
A sense of humor I could love
And now, she's come back to the world!
Yeah? Yeah! Yeah? Yeah!
Yeah? Yes! OhHHH..... YESSSS, Ka-CHINGGGG!
To some's chagrin:
No, not his twin
Real, and tony 
Wit, hurl, on her own, that you love
Thank God, Amen.....
[repeat and fade, but FG shall never fade, no matter who thinks what.]
verb: to know, have knowledge of or about; to understand or perceive
noun: range of what one can know or understand
 From the Clint Eastwood movie, "Magnum Force": (1973)
Neighbor Girl: "What does a girl have to do to go to bed with you?"
Dirty Harry (Eastwood): "Try knocking on the door."
FG knocked on the door. In four years here, no one else but TJC has. (Co-written songs; haven't been to bed with either of them. Or both of them.)
Given that each of the three has an excess of ideas vs. time to execute, methinks that's enough for TT to handle. If there's some writer *you* like and would like to co-write with, try knocking on the door. :-)
 What an insult to FG! OK, maybe TT's gotten lucky a couple of times and scored a hit or two here and there, but for a few people to think it impossible for a relatively noob writer, of great mind, education, culture, and learning, to get into the same ballpark so quickly that it "must" be TT under an alias? (Compliment to TT, perhaps, but insult to FG.)
 "tony" - No, not the Beav's older brother, but "Marked by an elegant or exclusive manner or quality: a tony country club."
Aside from the above, FG:
1) Liked TT's style and wanted to learn from it. Not learn it to copy it, but learn *from* it and adapt it to her own (like, say, uh -- how closely the above was syllable-matched to TOS ;-).
2) Liked the things TT taught, and liked -- or at least tolerated -- the way he teaches them. How many others can honestly say that?
3) Caught on amazingly quickly, and was soon throwin' 'em back as good, or better, than they were comin' (lines, subs, and puns).
4) Collaborated willingly and eagerly, and expressed appreciation for the assistance, an appreciation which rapidly became mutual. TT doesn't blame anyone who gets put on the defensive in response to his suggestions, but how nice to find one who was *grateful* for them. Maybe *that* is what was so difficult to believe, as not everyone could see themselves in that situation?
FWIW, to whatever extent TT's "ken" (see above def. as noun) might be a little above the average, it's because he, too, has been willing and eager to learn anything from anyone, anywhere, who knows what they're talking about. Ian Fleming said the same thing about his character, James Bond: "Bond was ready to listen to any man who was master of his subject, any subject." (the novel, "Goldfinger". Quoted from memory, so might be slightly off, as that was published in 1959, and read maybe 40+ years ago, but the line stuck with TT always.)
She's real, she's brilliant, and that's that.