>>2969659>>2969792Honestly, human beings are heavy. There's no way you can lie tangled up like in the OP for any amount of time. He's got all her weight on his arm, she's got all his weight on that leg that's tucked under. Even that arm she's got under his head? A human head weighs as much as a bowling ball. How long would you be willing to lie with a bowling ball on your arm?
Also, you know the feeling of swamp nuts, where all the flesh in your crotch sticks together? That's what skinship feels like. I guarantee you his face is uncomfortably stuck to the skin of her upper arm and chest. And he's afraid to move and fix it because...
You lie there with the hyperawareness that any little move you make might disturb your partner and wake them up, which makes you tense and unwilling to move around and loosen up as much as you might be used to. Then again, it's been almost ten years since I regularly slept with anyone, and that was when I was a poor college student and we were sharing a twin bed. It's probably better in a queen bed.