cmv: You have no right to be angry with someone who starts dating (or even marries) your ex, it makes you a disrespectful, insecure person.

If someone is in a relationship, it is your responsibility to be respectful of that relationship (or to remove yourself from their lives or something). If that relationship ends, you have a right to pursue them, and the fact that you chose to wait shows that you are respectful and empathetic, but you don't have a right to be angry if they choose someone else. It's disrespectful to the person they are in a relationship with, because you are saying that their relationship doesn't matter, you are disrespecting your own morals and values (which is why you waited in the first place), and you're showing that you put your own desires (being with that person) before literally everything else. You also become a disrespectful, insecure, bitter, and toxic person. <br><br>EDIT: To clarify, this is just about the fact that the person is with your ex. If you find out that they were talking to your ex while they were still with you (or if your ex was talking with them, or if they were having an affair etc.) you have every right to be angry. This is about if someone starts dating someone new, and it happens to be an ex of yours, you have no right to be angry about it.