The top should have been a little bit gracious or grateful and help the skinny guy finish. He was just left discarded like a worthless thing. He has feelings and desires too. That's cruel, regardless if this is some casual fuck.
I would love it when I get a stranger from Grindr to come and donate his seed inside of my ass. It's fucking wonderful when they get up and leave then I'm able to use that sperm in my ass to stroke my cock come on, come on and donate your sperm to good use. Come and fuck a gay pussy