Girlfriend sends text messages to others

See if the content is ambiguous. If it's that ambiguous, it means they have a problem. Your girlfriend said it was from her sister. You can confront her. Otherwise, you can trust her for a while. But guessing between couples is not good. I think it's better to be clear. I think she said her sister's information was not credible. If these messages are sent several days apart, it means that your girlfriend is lying. You can ask her why her sister doesn't send it on her mobile phone. Don't mind if you just send a few ordinary messages at the same time. I think your girlfriend is probably lying.