AITA in my situationship

AITA for unadding a guy I was in a situationship with just to get a rise out of him — and possibly triggering the end of it?

F(16), he’s M(17). We go to a super small private school — literally 30 people graduated this year. Back in November, this guy (I’ll call him P) added me on Snap. I knew my friend had a thing for him at one point, so I told her and asked if it was cool to add him back. She said “sure,” but I wasn’t sure if she meant it, so I jokingly gave her my login to talk to him for fun. Eventually that faded, and I stopped using Snap for my own reasons.

A month later, she told me he unadded me for not talking to him 😭. I didn’t think much of it.

Fast forward to post-grad. My friend (S) says she has to tell me something about P. I thought he found out about the November thing, but no — apparently P and his friend (A) had been talking and said they wanted to take S and me out because we were the “best looking.” I’m not mad about that part lol.

Then A asks S to ask me if I’d add P back since he unadded me before. I was like sure why not. Over the next month and a half, P and I got close. We skipped school a lot, made out, and on our last link before summer, he asked if I wanted to keep meeting up. I said yes. He was surprised but down.

We kept snapping after that. I asked him to meet one day, and he said he wasn’t busy — but then the next day asked to reschedule. I couldn’t, and then he started leaving me on open for hours. I brought it up jokingly, and he acted clueless. So I started mirroring him: left him on open, waited to reply, etc. It just kept going.

Then one night I sent him a snap and he left me on open again. So I was on call with my friend and said, “Should I unadd him just to get a reaction?” She said yes, so I did. And then added him back like 30 mins later.

He asked “why’d you unadd me?” and I played clueless like he always does. Then he left me on open again. Later that night, while I was out, he unadded me — I figured it was a “payback” move. I didn’t add him back right away because I was busy, and when I checked again, the friend request was gone. So I re-added him… but he hasn’t added me back since.

It’s been a bit now. He also deleted all our saved chats. One of my friends told A what happened, and apparently P said he’d add me back… but never did.

So now I’m wondering — AITA for unadding him first, even if it was just to get a rise out of him and I added him back right after? Did I ruin it by playing that small game, or is he just being dramatic and immature by ghosting me over it?