Even if he was attracted to him, he was still his friend, and Yuktio was really nice to him, so he would be nice too. LIke I said before, not much people talked to him and cared about him, he was also going through a critical process in his life, he was just learning to show his feelings, I dont think we will see Syaoran being genki anytime soon....
Yes Syaoran is serious, like how Yue is, like how Eriol is, being serious isn't a downfall, its just a reality check, sometimes what Sakura needs the most.
How did he feel dignified? Yes he was relieved, but he smiled, he showed concern and happiness. I dont really get it, but what will make you understand that Syaoran is a kid, who is just learnign to show his emotions. He was taught to be serious, he was accustomed to it. HIs living style, his purpose in life for much of the show/manga was too look for the cards and be serious about it. And Sakura changed that, believe it or not.
Yes Sakura can read him that easily, and also, Sakura is naive and trusting, since you said that Tomoyo didn't show her sadness to not trouble SAkura, it worked right? Well, Sakura wont catch onto things easily, but when she does, she worries, and the person I see her worry the most is Syaoran. She knows when he's happy, she catches his every word, she watches his expressions, she admires him and his hardwork. She also came to love that about him, she loved how he showed her that little love that he never showed anyone. She felt special that Syaoran, a usually serious person, showed her his happiness.
To be frank, Syaoran shows more concern to Sakura then Sakura did to Syaoran. Syaoran watched all the time, he knew when she was hurt, when she was happy, when she was in trouble, when she kept something from him. Sakura didn't have an emotional wall, however he made sure that he knew everything about her feelings, he told her to call him when she was in trouble. These are kids, you wont see much, really.
Syaoran doesn;t need to say much, he can show his feeling through his actions. It can be simply giving a handkercheif and huggign your loved one, or helping them all the time, or making sure they are happy, and letting your feelings wait so your loved one can be happy. He doesn't need words to express his feelings, because Sakura taught him that.
Uh uh. Syaoran may be a brooder but he is in know way expressionless. In fact, I will show you picutres seeing as you dont get it through words.
Anger:
Worry/CareEmbrassment/AffectionJealousyShockDetermintionHapiness[
]
A picture says a thousadn words, and if you still dont believe, then you need help.
EDIT: Gomen, the happiness link wasn't working, but I fixed it