Ex’s and girl code

My first ex from 10 years ago hits me up every couple of years. I never reply and if I do I ask him to leave me alone. This year he hit me up and I snooped. He has a baby now and is with the mom. So I asked why he messaged me. He said he misses me and wants a “friendship” 🙄. I know he still wants be with me. He use to tell me all the time before I stopped replying. I told him to leave me alone as usual and that he needs to tell the mother of his child he hit me up. Now what I’m hung up on is do I send her the screen shots? I don’t want to cause problems but I’d want to know. I hate drama. I don’t want it. I don’t know what to do!