How do you tell your ex that you are dating someone?
As long as you are not being cruel, telling your ex as soon as you think that he, or a mutual friend, might see you and your new partner together is a good idea. Sending an email is fine, although try to use a hotmail address rather than a work address if possible so they can read it in their own time.
Should you tell your ex youre dating someone else?
You dont have any obligation to tell them. This is especially true if it ended badly, there are still hard feelings on either side, or one or both of you did not take it well. Sometimes its better to set a boundary and not have any contact.
Is it okay to talk to your ex when youre in a relationship?
You must completely let go of your past since talking to an ex while in a relationship is not such a good idea. They shouldnt be plastered all over your phone. Its okay to have them on your social media, but dont interact with them. Dont text each other or like each others photos.