So I went out to a club with my friend the other night and made out with her when we were dancing, im not sure if I should tell my boyfriend or not because I don't know if he would care or not and I don't want to make a big thing of it if it's nothing.
It doesn't matter if you're intoxicated, sleepy, or overtired. You're responsible for your own decisions. If you cheated, then you cheated. There isn't any good excuse for doing so, so take responsibility for what you've done.
No one wants to be cheated on, and if you love your partner, you'd never hurt them by destroying the trust they have in you. And also have you ever been suspicious that your partner was cheating on you?