Why does dallas think cherry refused to get a coke with him does ponyboy agree with his reasoning

Dallas thinks Cherry hates him but Pony knows she is only afraid of falling in love with him.

"Dallas thinks Cherry hates him but Pony knows she is only afraid of falling in love with him." I agree with aslan

Dallas thinks she is flirting with him or playing hard to get, because he it says that he took this as a cue to go down there and flirt more that is when Johnny stops him and we find out Dallas has a week spot. Ponyboy doesn't agree with him but later finds out the cherry is in love with Dallas.

What does ponyboy realize about darry when he sees him crying?