I know I'm going to get sooo flamed for this, but I believe it's true.
Shampoo belongs with Mousse.  In the second Ranma movie (Nihao my
Concubine), they had the guys going after the girls ya know.  Well, Nabiki
was with Kuno, Akane was with Ranma, Ukyou was with Ryouga, and Shampoo was
with Mousse.  And when he was hurt, she acted like she really cared.
That's my two cents.

she was concerned for the guy! She never showed him anymore affection than
she would a friend. I think that's what Shampoo thinks of him as and
always will: a friend. She doesn't even show that much likeing toward him
most of the time though because she has appearances to maintain, but in a
few rare instances she lets her gaurd down and shows her true self, that
she's actually a caring person. She shows this deeper side to herself a
couple other times too... like when she doesn't kill Ranma after he tells
her he's a she. i don't think Shampoo, despite all her threats, would ever
actually kill anyone... though I think she thinks she would. I'm of the
opinion that even chasing Ranma around with that sword of hers, she would
have stopped the killing blow before it landed, unable to complete the
act, or if she did actually kill someone, she'd be devistated by it.

Anyway, everyone already knows that I'm totally bias for Shampoo, but
that's my thoughts on the matter.

Ryan