What is the first moment of 爱情 relationship Nagisa-Tomoya?

你 know that a major 爱情 story in this 日本动漫 is around Nagisa and Tomoya relationship. 你 also obviously know that in Chapter 22 Tomoya finally confess his 爱情 directly to Nagisa and they start become lovers.

But I believe that there are some moments before it that shows Nagisa and Tomoya feel in 爱情 each other.

So, I want to hear your opinion about the first moment seen in this 日本动漫 that 显示 Nagisa and Tomoya feel in 爱情 each other. 你 can mention the chapter which shows that moment and the reason 你 choose it as the first moment.

I 爱情 the romantic plot shown is this anime, so I believe get some interesting moments in it with all of your opinion in this question.

Thank 你 for your answers. :)