Looking on Google, different sources will reveal different answers. Most sources say you are born gay(or straight) and stay that way for life. But ive read of people who "discovered" they were gay at 30, 40, 50 after they have been married for years. I also read that seemly straight people somehow turn gay if they find the right person whos beautiful, intellegant, rich, affectionate, etc. Look on other forums for threads titled "who would you turn gay for" alot of people say they are willing to turn gay in the right circumstances. They comment like "wow this woman is so pretty" or "that man is so handsome" Perhaps no one is 100% straight, gay, nor asexual? Ive read that 50% of men have had some sort of sexual relations with other men! Heck, ive been hit on(as in, they offered sexual favors and/or wanted a relationship) by other men back in high school and on the internet and most of those men said they were straight! One research study on the net showed homoerotica to men who identified as straight and 70% of them demonstrated varying levels of arousal with some of them fully aroused and sporting massive erections! I found that funny! Men(excluding asexuals) are such a horny bunch they have enough drive to be turned on by almost anything, including by other men! Ive read that as many as 20% of men are gay and more than 50% of men are bisexual to some extent. Perhaps they may be heterobisexual meaning they are 75% straight. They are "straight" enough that they prefer women and will usually choose women as long as they are available and willing to be in relationships. Can't find suitable women and they will settle for men, while less appealing/arousing is a far better option than nothing.