He fell asleep while we were kissing?

So my boyfriend and I were making out, he seemed to be really into it cause I'm like 90% sure he was hard.

Earlier on he had said he was tired, but then, right in the middle of making out, he just fell asleep? Like, one second, he's into it and he's responding, the next he's asleep?

What is this? Does this mean I'm a bad kisser?
He fell asleep while we were kissing?
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