Tomoyo and Sakura
Tomoyo and Sakura.... many say, "Ew! Girl and a girl?! Not to mention COUSINS?!" Yes, it'll be sick 10-year-old yuri and an incest to boot if Tomoyo approached Sakura with any harmful desire.  Fortunately, CLAMP have better things in their lives to do then to draw something like that.
Tomoyo, like Sakura, knows what it is to be lonely.  Her mother is always away, and only servants and bodyguards keep her company.  Upon meeting Sakura, she gets attracted to Sakura's kind nature.  As they got closer, Tomoyo's affection for Sakura deepened.  Sakura helps Tomoyo pour out the love she has inside herself by explosing her lonely side to her.
Unlike Sakura, Tomoyo is not thirsty for affection.  She's actually anxious to release all the affection she had bottled up inside of her.  Being naturally kind and gentle, she had no where to vent out her kindness.  Sakura was her perfect "victim" to pamper and take care of.  Thus Tomoyo happily accepted the challenge, and she is now Sakura's faithful companion, following her wherever she goes(no, not bathroom.).
Tomoyo's feelings are border line between that of mother's love for her child and that of true, self-less love.  Even though Tomoyo does not desire any returning feelings from Sakura, it must still hurt her when she sees Sakura struggling to confess her feelings first to Yukito, then Shaoran.  Because she loves her so much, I think she can't help but feel jealous... after all, she is a human.  But she still bears her pains, because Sakura's happiness is more important to her then her pains. 

"It's all right if the person whom I love does not love me back... for me, the person whom I love being happy is the happiest thing that can happen...."

Tomoyo and Sakura, may your beautiful friendship last forever.
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