I mean He compared and imagined gamora as his own mom and even “took her hand! ” And then in the next episode he had sexual feelings for her HE OBVIOUSLY DID HIS OWN MOM, Thy probably did all kinds of gruesome things. This man is disgusting! Ew ew ew ew EWWWW!
He obviously didn't do his mom because when she died of brain cancer he was eight and was probably sick for a while before she was sent to the hospital. There would be no reason him and his mom to do it anyway so there you go and shouldn't have to explain it.