Ok so basically I need your help.

My ex opened up to me the other day (who I don’t even speak to anymore) that he’s still absolutely in love with me and made the biggest mistake of his life (he fell for another girl). It was the most heartbreaking time for me and I struggled so much for so long. He messaged me completely out of the blue, and has continued to message me about it. He’s told me that he isn’t trying to ruin anything between my boyfriend and I, but before he mentioned something about wanting to kiss me and what I would do if he tried. I can’t take it anymore!! My current boyfriend I are SO good. I see myself marrying the man. He treats me beyond perfect and would kill for me.

So my question is - do I tell my boyfriend about this? I have no idea what to do. I feel guilty not telling him. My ex is telling me not to tell him and it’s driving me crazy. All I know is that my boyfriend would LITERALLY kill him. They both love me, that’s not a fight I’d like to watch. But I honestly just feel so guilty knowing about this and my boyfriend doesn’t. What do I do??