I ran across a movie today starring Kevin Bernhardt. It is called "Le feu sous la peau" and was made in 1985. Kevin Bernhardt plays a guy out for revenge and he seduces all the Ladies in his buddy's family. At the end of the movie he has a homoerotic scene with the father of the family and it is eluded to that he seduced him as well and he has the guy's wife waiting for him in the attic and she has removed a some floorboards in the attic and I think she witness her husband probably going down on handsome Rafael. It is set up before hand when the two guys go jogging and Rafael takes a rest by some water and says he would like to go swimming and the woman's husband says he has lots of swimsuits in his room. Anyway what we do see is the husband get quite hot and bothered when Rafael tries on a couple of pairs of skimpy trunks. Rafael puts his hand on the guys should and says "Are you thinking what I am thinking George". So I am thinking that knowing the wife is watching he allows the husband to give him head; but that could be just my fertile imagination. Around 1:15:30 into the movie the jog starts and buzzing through the movie George does touch Rafael a fair bit so he is attracted and Rafael is not discouraging the attraction.
You can find the French / Russia language version of the movie on Tubepornclassic:
https://tubepornclassic.com/videos/148559/le-feu-sous-la-peau/
An English language dub is available on YouTube but you have to sign in to confirm you age:
Kevin Bernhardt from his image at IMDB is still a good looking man and he was gorgeous back in 1985. This would be a movie that is worth a remake and perhaps it could show the gay scene this time but regardless it was hot what they did show back then.