I was meeting up with an ex and my now ex boyfriend found out.
How do you know that your last ex-boyfriend found out?
My last ex-boyfriend told me that he knows.
While it is unfortunate that your last ex-boyfriend found out, it is okay you are no longer dating and can see whoever you want. It will still cause some hurt feelings but they will get over it.
I'm going to continue to see my ex anyways since it's not hurting anyone.
I hope you find happiness. You might rekindle your love with your ex, it can happen sometimes. Take it slow and enjoy each other's company, you two may end up being better friends as well.