There are few things more devastating for a woman than finding out that her man is gay. Not only has she deal with the fact that she might be responsible for turning him off the fairer sex, but worse, he was probably the perfect man. He was loving, he was romantic. He was an emotional and sensitive soul who loved to talk about his feelings. He adored shopping and had an innate sense of style. He was perfectly groomed, liked all the TV shows you did and probably peed sitting down. Finding out that he batted for the other team probably destroyed her confidence in herself and probably in men also. Obviously, ladies, this must be avoided at all costs.
It is therefore very important to spot the warning signs early on and thus avoid the terrible anguish resulting from a late realisation. In some cultures (West of Ireland and probably Australian), simply owning an umbrella used to be reason enough for suspicions of a man's sexuality. However, the rise of the metrosexual and increased female influence has blurred the boundaries somewhat in today's world.
The Venn diagram above offers some possible pointers for the concerned girlfriend. Now, if any of the items listed above strikes a chord with you, there should be some cause for concern. There is no need to panic though unless there is a combination of items from 2 different areas (regions 1, 2, and 3 in the diagram). If your man exhibits characteristics from all 3 areas (region 4 above), you need to get your GAYDAR recalibrated!