Other tips under this red flag: Whenever you hear a gay man suggest that he “acts straight” or is "straight acting" you need to be concerned.
There is a difference between being masculine and “acting” hiding who you are.
One of them is the amount of alcohol he is consuming and the speed in which he is doing it.
If you notice that he is pounding back glass after glass of wine (or some other drink) and that he is encouraging you to do the same – run.
And what exactly does "acting straight mean" At its core, it's called internalized homophobia when a gay dude says this.