[queenie]

Those comments had nothing at all to do with Paul's or anyone else's perceptions of homosexuality, and everything to do with Paul being in a complete state of confusion and jealousy about Helen. Helen had a very flirty relationship with Josh, which she hadn't really had with anyone else, and Paul got totally worked up about it.
What made it worse is that Josh came across as very sexual (whether the sexuality was hetero or homo is irrelevant) and so threatening to the other men. Brian found Josh just as threatening as Paul did, but obviously in a very different way...