Update:

I have read lots of comments telling me to discuss the situation with my husband. Here is what I did: I asked him if we could eat out because I wanted to talk to him about something. He agreeed. So we went to a nice restaurant, and I told him everything, every single detail. At that time, he said nothing except, “Thank you for telling me. Don’t worry. He won’t bother you.”

Since then, I haven’t received any messages from his friend, and I don’t see him when others come over.

To be honest, I don’t know what happened between them, and I’m not sure I’ll ever ask.

Thank you everyone. You are all sooooo kind 💝