I’ve had HSV1 for a very long time. When I had my first few outbreaks it was horrible. I had it on my lips, chin, cheek, nose. I didn’t know what it was, my doctors didn’t know either.
Have you considered he just picked up HSV1 from somewhere and not HSV2? Innocent kisses from family members, etc can transfer HSV1 so innocently. I know how the blame game works, and it’s easy to take that on yourself. I’m a mom too.
My suggestion, take him to the doctor and have them swab when he first gets one and have them verify for you what strain he has. You would take him to the doctor if he had any other infection., right? My son knows that he can’t kiss me when I have an outbreak. He knows it’s contagious. He’s known since he was little. As he got older he asked me more questions. I told him it was herpes cold sores and how it can be sexually transmitted. So you only need to tell him what is necessary at that time of his life.
It will be alright. Just be yourself. Just be the great mom you have always been.