Men with this condition still experience orgasm. Men can also ejaculate without having the sensations of orgasm. People can enjoy sex without orgasm. However, the assumption that men always have orgasms can lead some to fake one instead. Faking it can be a tricky situation.
Most people do it to spare the feelings of their partner.
But this may not be good for anyone involved. It is important to communicate with your partner about the things you enjoy. You should be comfortable enough to guide your partner to those areas that make your toes curl. It is also important for people to understand that orgasm is not inevitable. No one should feel bad about that.