Pay attention to his grooming habits. Notice how he meticulously does his hair. Try to find out how he chose the grooming products he owns. An average guy doesn't care about what brand or what type of products he uses. Is he particularly interested in top designer shoes and other accessories? Another warning sign is the time he spends inside the bathroom. If he takes longer than you do, that may be a sign that he's batting for the other team.
People always consider gay guys to be fans of many divas. If your boyfriend likes listening to divas such as Whitney Houston, Mariah Carey, Celine Dion, Barbra Streisand and (God forbid) Cher, then he might be one flaming gay man. Have you ever seen your boyfriend listening to any of these divas' records? Or worse, have you ever heard him singing any of their songs? And if he indeed sings their songs, does he do it in falsetto? If your answer is yes, then that could be a sign.
For some reason, gay guys love watching beauty pageants, as far as stereotypes are concerned. These events are a celebration of beauty and glamor that many gay people really value. Of course, your boyfriend won't let his fascination with beauty pageants be known, but if you really want to know, here's a quick tip. While talking about another topic, ask this question out of the blue: "Oh by the way, who was the 1999 Miss Universe?" If he is able to give you an answer, be scared. Be very scared. Gay people often also love awards shows such as the Oscars, the Golden Globes, the Emmys, the Grammys and many others.
Another excellent way to know if your boyfriend is gay is by simply observing his eyes. Yep, it's all in the eyes. The next time you two are walking in a mall or around a local park with numerous people, notice how his eyes move. Some gay people let their eyes wander and jump from one guy to another. Notice how he shifts his vision when a hot man passes by. If his eyes are shifty when he is around men, he might be gay.
A closeted gay man also feels uncomfortable and uneasy around straight guy friends as he tries hard not to show his concealed sexuality. In a public men's room, a closeted gay man is also uncomfortable using any empty urinal when other straight men are using the ones near his. Often, instead of using the urinals, he would go inside a cubicle and just pee into the toilet bowl.
Gay men, whether out or closeted, are inspired by many gay people who have proven their worth in history. There is just pure pride and sense of accomplishment that many gay guys feel when someone gay is able to achieve something. This can be evident in his in-depth knowledge about these things. Can he last even five minutes without quoting Oscar Wilde? Does he keep on stressing out that Alexander the Great was gay and that he was in love with his best friend? Does he always talk about how Oprah did something amazing? Okay, Oprah is not gay, but many gay people love her.