Some relationships do not end in a pleasant way, which often leaves one or both parties feeling a little bitter—especially when one of them moves on to someone new. Some celebrities have not only dissed their exes, but also have taken swipes at their exes' new partners and said some petty and sometimes hurtful things about them.

From Taylor Swift and Joe Jonas to Selena Gomez and Justin Bieber, these exes definitely got even saying some mean things about their new boyfriends/girlfriends and it definitely caused a ton of drama.

Click through the gallery to see seven celebs who totally dissed their exes new relationship.