Just embarrassed the hell out of myself

I [19M] met this guy [21] on Grindr. We agreed to meet at a local park and hang out for a bit before getting down n dirty.
We both got there around 1:30 and sat on the swings. We started talking and I genuinely liked him. He found a ball near the playground so we sat in the mulch, and started tossing it back and forth.
He started throwing it a little too roughly and I jokingly told him if he didn't slow down I would slap him across the face.
He threw it at my cheek and it genuinely hurt. So I started chasing him around the playground and he went underneath the floor, ya know where kids can walk to get to the top of slides and stuff. When I followed him there, I didn't duck my head in time and ran straight into a bar with my forehead, so I felt flat backwards.
It hurt excruciatingly bad and so I laid there, crunching up my face with my hand to my forehead.
He came over asking if I was okay and before I could respond open my I just blacked out. I woke up around twenty minutes later and couldn't find him, so I just came home. I looked in the mirror and noticed a little bloody cut on my forehead.
I don't know if he thought I was dead or if it would look bad on him just standing over my unconcious body but the one thing I do know is that I embarrassed myself and he blocked me on Grindr. Not only that but I have to walk around with this cut for however long it will take to go away.
So, that's great.
We both got there around 1:30 and sat on the swings. We started talking and I genuinely liked him. He found a ball near the playground so we sat in the mulch, and started tossing it back and forth.
He started throwing it a little too roughly and I jokingly told him if he didn't slow down I would slap him across the face.
He threw it at my cheek and it genuinely hurt. So I started chasing him around the playground and he went underneath the floor, ya know where kids can walk to get to the top of slides and stuff. When I followed him there, I didn't duck my head in time and ran straight into a bar with my forehead, so I felt flat backwards.
It hurt excruciatingly bad and so I laid there, crunching up my face with my hand to my forehead.
He came over asking if I was okay and before I could respond open my I just blacked out. I woke up around twenty minutes later and couldn't find him, so I just came home. I looked in the mirror and noticed a little bloody cut on my forehead.

I don't know if he thought I was dead or if it would look bad on him just standing over my unconcious body but the one thing I do know is that I embarrassed myself and he blocked me on Grindr. Not only that but I have to walk around with this cut for however long it will take to go away.
So, that's great.