Whoever said that having sexual relations with a person of the same sex is not cheating on the spouse must have gotten his/her definitions wrong. It is like saying that when a person who is into a committed gay relationship enters a sexual relationship with a member of the opposite sex, there is no cheating committed. Gender aside, sexual relations outside a monogamous marriage or a committed relationship is tantamount to cheating.
The problem with cheaters is that they usually shy away from responsibility and resort to tactics and reasoning that intend to trivialize their wrongdoings. Arguing that no cheating occurred because it was done with a member of the same sex has no ground whatsoever. A monogamous marriage specifically promotes exclusive sexual relation between the couple alone without qualifying exceptions like same sex sexual relations.
Many who have gone through the experience of being cheated by their spouse through same sex infidelity swear by the indescribable feeling of pain in their discovery of the truth. For cheaters who are not really gays to start with, the cheated spouse sees the infidelity as a direct attack to their manhood or womanhood. It is indirectly saying that the spouse is not enough to satisfy the needs of the cheater that he/she has to find them in people of the same gender.
For cheaters who are actually gay or lesbian, making someone believe otherwise to enter into marriage is certainly an unfair proposition. Marrying someone and then continuing on with a homosexual relationship is twice the deceit of the usual infidelity. There is also greater reason to believe that the marriage was based on an ulterior motive such as having children for lesbians and keeping up a manly front for male gays. In our modern world, sexual orientation is no longer the key issue but rather in avoiding hurting others by virtue of our sexual orientation and preference.
