This behaviour is sometimes called “bi-curious” or “hetero-flexible.” To say the least, human sexuality is complex, multifaceted, and nuanced. Some things are just hot. Sometimes, to a straight man, seeing another straight guy jerking off is hot. Your precise sexuality doesn’t necessarily pivot around each and every sexual scenario you find arousing.
It is important to note sexual behaviour and sexual orientation are two separate things and should not be confused with each other. Therefore, a person’s sexual behaviour does not necessarily indicate their sexual orientation. A person’s sexual orientation is determined by their underlying romantic and/or sexual