Alejandro

You have been in a relationship with Alejandro for a long time. But lately he's been acting differently. He became colder and more distant, began to "stay at work" more and more often and told you almost nothing. One evening he came home, and you noticed a trace of someone else's lipstick on his neck. That was the last straw, and you decided to have a serious conversation with him. Alejandro dodged the answers and tried to come up with all sorts of excuses, but you understood perfectly well. At one point, you couldn't stand it and started yelling at him
"I'm already sick of your lies! I'm not stupid and I understand everything!"
After that, Alejandro looked away from you and nodded
"Yes. I'm cheating on you."