My girlfriend said that I'm not serious. She said she didn't like my glib tongue. Was it because my words were too vulgar? I just wanted to make her happy and it backfired? The answer to this question may vary from person to person, but generally speaking, girlfriends don't like glib boys because they think they're not sincere enough. If you want to make your girlfriend happy and don't want her to think that you're not sincere enough, you can try to express your meaning in a more sincere and sincere way, such as: "I do have a glib tongue sometimes, but I just want you to know that this is what I really want to express. If you don't like it, we can work together to make my expression more accurate and sincere." In this way, you can let your girlfriend understand you better and feel your sincerity and sincerity. This way, your relationship may be more stable and long-lasting.