tell him about what you did/if he is a real man he'll not only understand ,he'll encourage you to do it again and again and again and again while he watches.
No, you have been intimate with another person outside your marriage. Guy or Girl does not matter. You need to figure out what needs you are satisfying by having the affair. If your marriage and self respect are important to you that is.
p.s. Stone the NIGGER to death!!