Thanks for your question. It sounds as though you're not sure whether dating your ex's friend is okay or not.

You should be free to date who you want to but it's important to think about this type of situation carefully. Maybe look at the reasons as to why you're feeling unsure about this. What are they? Could you address some of these to make it easier? For example, can you let your ex know that you're going to date his friend? Or does his friend need to also let him know? That might be a respectful thing to do and possibly cause less drama for you later on. You could also write down a list of the positives and negatives of dating within this scenario. That could be helpful in making things clearer.

You don't have to do any of this either. It's just about thinking ahead of the things that could happen in this situation. Take care.