My first awkward/sexy story time

(Yes there is tape over my nipples)

Now we're finally here.
I've been hinting about me sharing some awkward sex stories that I've been through. Thought it could be a fun weekend read every now and then, (as long as I have stories to tell).
I will tell no names, but let's call this dude I was dating for, let's say... Marcus.

Me and Marcus had been dating for like 2 months at this time, as this was the 4th time we met. We usually met 2 times per month so this was still pretty new. We had a long distance relationship at that point so our meetings were over weekends since we both had school on usual days.

You know how it is when you're in love. The first weeks/months (for me at least and everyone I met) are loaded with new exciting sex. So trust me when I say, that we had a lot of sexy times. All though... One night when we were sleeping I woke up by the tears of Marcus. The time must have been around 3-4 am, and all I could hear was Marcus crying. In the middle of the night. He didn't precisely wake me up by shaking my shoulders or anything, I just woke up with my back towards him by the sound of him crying.

So obviously I turned around and asked him what was wrong.
- Why are you crying?, I asked.
- It was all an accident, I promise, he said

I didn't understand... What fucking accident happened 3 am in the morning and why the hell is he crying.

-What accident? I asked, and as soon as I asked this I could see in the hint of the dark, that he was lying naked in the bed.

He was sobbing and spoke the words:
- Feel at your lower back...

Why can't he just tell me what happened, here I have to investigate my own damn crime scene.

But I did what I was told. I took my right hand and started "searching" on my lower back for whatever was coming, when I felt it...

There was this liquid somehow, or it was at least wet and I didn't know what it was. So I asked:

-What the hell is this on my back? Why are you naked and WHY are you crying? I was getting irritaded because I obviously couldn't turn my head to see what it was and he was just giving me clues without just telling me what the problem was.

And then he said:
-It must have happened in my sleep or something. I think I accidently cum on your back in my sleep, he said quietly.

What did he just say? I mean, accidents happens but I've never experienced this before. Is this even possible? Or is he just saying that, but in fact, he was masturbating literally "behind my back" when I was sleeping. Because for as much as I can remember, we both went to sleep with at least underwear, but there was no underwear left on that boy.

What do you think?

Anyone experienced this before?

Hope you liked my first awkward story time, and I'll make more every weekend if you enjoyed it. :D