Hello guys. Im a 15 year old dude who wants to build his first relationship. So im pretty inexperienced. I will start from the start and try to explain everything as better as possible. So there is this girl i really like, which i eant to date. The first time i asked her for adate i was pretty damn nervous. But she was smiling alot (giving me what i call the "give it to me" smile) when talking to me i took it as a good sign and manned up to.ask her out. And she said yes. But unfortunately i couldn't contact her on whatsapp, which i use to communicate with her, so i didnt actually go on a date with her. Kinda sad, but thus wasnt the first time i got rejected, so i moved on. The next day, i kinda didnt want to interact with her, but in class, i noticed she was staring at me really strongly (not in some kind of pissed way) so i decided to go talk to her. She told me her whatsapp expired and she said she was sorry from her heart and she didnt mean it. I dont know how true could this story be, but i think she wouldnt lie to me, so believe her, since she said she will open a new account and will give me her number as soon as possible. And i firectly after that said "Well since this saturday we didnt hang out, wanna go the next weekend." (tryhard?). She answered me (while smiling alot) with "Haha maybe, we have a lot of time until then". I then said "Ok then" and then we separated since we were heading home.

My question is: Is she genuily interested in me. I dont't kniw what to think of that maybe. Was she doing that in a way to tease me? Or simply doesnt want to hurt my feelings? She always gave me good messages (always turns to me when i ask her something, when i was supposed to move in a bank with someone else temporarily, i heard she saying to her friends that she didnt have a problem to come and sit with me)

Yes, i might overthink alot, and thats true, but i would like to not fuck up, so thanks to everyone who helps and gives advices.