My girlfriend suddenly and really suddenly sent me a text message saying that I can’t bear your love. I don't understand what it means? We have been together for a month, together

It is very likely that it is because of family members. Who are you to judge that it is not because of family members? If he is hot and cold towards you, it's not because he has a new love. Maybe he was touched by something and made him more afraid, so that's why. What you need now is to care about her as always, talk to her at the right time, understand the cause of the matter, and then solve the problem