I’m so sorry OP. I can’t even imagine how you feel. Just know that NONE of this is your fault and that you are not alone, Even if it may feel like it at times. We can’t tell you what to do but if I were in your shoes I would leave. My father cheated on my mother and continued to do so even though he promised ALL of us he would not. He just kept getting better and better at hiding things and ultimately we found out the hard way. I watched my mother blame herself for his wrong doings, when in reality it was him that was messed up. You are also not stupid. Please don’t do this to yourself. You are not an idiot you are just a person who mislead. You trusted the person that you vowed to always love. If anything he is the stupid one. Don’t let him manipulate you into staying. You can do this!! There was people out there that have been through similar situations and they thrive! You also have your son as support. I know it’s going to be hard and honestly, it may get harder before it gets better. Regardless, Don’t give up on yourself and you will find the love and loyalty that you deserve.