Given that Greek culture at the time honoured and celebrated homosexually relationships, as special and as a major benefit to society.

And given that Greek culture was at that time becoming by far the most important and dominant culture in the Eastern Roman Empire. That the philosophy of Jesus is clearly a reaction to incoming Greek ideas. That he used metaphors like "brothers", "brotherly love", etc. That there was a fashion among the Jews of the time for imitating the Greek culture, so much so that you could actually get a reverse circumcision, so that you could pose as Greek in the public baths, and for other things.

Jesus and his twelve, if they existed, or the authors who invented them, if they did not. (Authors who wrote in Greek.) Had to have been aware of that, and of the fact that, the dominant culture in their world, would not merely see them as homosexual, but would actually expect them to be gay. Probably the only reason it is not thought worthy of mention in the bible, is that at that time it would have seemed so obvious that it was not worth a comment.