3. Eyes
No matter how committed a man is, they will check out another lady when out in public. It is like a human instinct, you cannot help it but give a glance. However, if you are with a gay man, then notice him carefully, he is likely to look more at men than at woman. In fact, if a really hot looking woman stands in front of him, he will probably won’t even notice it. But if there is a hot, well-built man walking by, watch his eyes follow that man from side to side.