I REJECTED my crush when I was young, stupid me

So about two years back, I had a huge crush on this girl we'll call "C". So C and I were really good friends, and she had shown numerous signs of interest, here are the top three-

1)Touch- So once I got like 98% in my class and C had also gotten the same amount. So she HUGS me from the back, then LIFTS ME in the air. I fall, and she starts RUBBING my BELLY and she seemed very caring. She is the only girl I have met till now who has cared about me so much, except for my mom.

2. Personal Space- One day we were talking over some topic I don't remember and she starts getting real close to me. Like her lips were less than 13 cm away from mine.

3)Confession- Once in the middle of the class, she HOLDS my hands and says "I really like you" and stupid me says "Thanks".

I dont think she is interested in me anymore since that next year our classes were shuffled. I hope next year when our classes are shuffled again, we get in the same class and her interest in me re ignites. I really feel embarrased for being so stupid, if I were to have told her my feelings, today we'd be in a relationship.