He cums

Peter came like a gusher into Sue's cunt and fell on top of her totally exhausted. A day fighing crime, working at a newspaper, making love to his wife, and an orgy had left him drained for the moment.

Knowing this, Peter's symbiot decided to get Peter home. After all the symbiot didn't want Peter to be miserable from lack of sleep from fucking.

Apparently the other symbiots felt the same because at that moment Reed came in. "Thank you so much for your help, Spiderman, I hope it wasn't too much trouble. Feel free to come back any time if you want to make sure they are pregnant."

And with that Peter left the Baxter building and went home to bed.