Getting "hints" but I can't tell if I'm overthinking or not

This post is going to be all over the place.

In freshmen year I was introduced to a friend of a friend. We were all in a group chat together where we would talk all the time, and eventually talk alone in dms and stuff like that. Fast forward to today where I am now done with my senior year, and we chat EVERY day for periods at a time.

I always really liked her, we have the same interests in shows, anime, and other stuff, and I feel we have really good chemistry. What's crazy is that we've NEVER had an actual class together, we've only seen each other outside of class.

I didn't want to acknowledge my feelings, in fear of ending a good friendship (I'm not friends with many girls or people in general lol) with the one girl I really talk to. However, I ended up bumping into her at my old elementary school since they were doing a clap out for seniors graduating that year. There wasn't many other seniors there (probably like 5 others), but we talked and stuck around each other the whole time

It was incredibly hot outside and I said I wished I had brought water with me. Without saying anything else, she turned around and gave me a water bottle that she had been carrying around. I asked where we should go next and she told me we could go sit on the empty stairs. Near the end of the conversation, she gave me her phone number without me even asking. I told her we'll probably never see each other again and she said "We'll see each other again."

My mom noticed her body language and asked me if she liked me. That plus all the other stuff has lead me to here, OVERTHINKING EVERYTHING!!! I really like this girl, so it's hard for me to tell whether I'm overthinking shit or if she actually likes me. The biggest hint I feel is this lovely note she put in my yearbook, it was easily the sweetest thing anyone had written.

"Hey Lukie, it was so good knowing you all 4 years. You're such a chillbguy and even though the earlier years were realy embarrassing, I thoroughly enjoyed our time together. Hope you have a great life lol Bye Goober -M"

(her name ends with an i, and in place of the dot was a heart. idk how she signed other yearbooks tho, she prob did the same thing)

COLLECTION OF OTHER "HINTS":

-Used to rarely drop by classes I was in if she didn't have anything going on that period. One of these classes was Spanish, where I was the ONLY person she knew besides the teacher

-I couldn't show up to my actual graduation because of a family emergency that morning. She was the ONLY person who reached out to me and asked where I was. Without going deep into the drama, a friend of mine and her HEAVILY dislike each other, but she still asked him at graduation where I was

-I made a joke on insta about how in the future I would be a stay at home husband and would birth the kids yadda yadda, and she said "Find me a clone like you" and "#wheremymalewifeatfr" 💀

-She asked me what time I got out of lunch so she could wait and see me passing by in the halls

-She would send me birthday messages right at 12am

She's currently visiting family in India until September, so I won't be able to see her until then. She did say she wanted to come over to see the new cat I got though lol. Give it to me straight what you yall think so I can stop going crazy over it <3