Why don't you text your girlfriend and call her back? He said he didn't notice.

Hello, it's normal that she doesn't reply to her text messages. Many girls generally don't reply some greetings or ordinary concerns, especially for boyfriends, because they can only be less polite and more casual to boyfriends. If you don't answer the phone, it depends on what happens. If you do this every time and for a long time, maybe there is something wrong with her personal habits, or there is an emotional conflict between you. But I think it's probably because I didn't notice your call, and sometimes I have troubles in my life. When you don't want to talk, you don't like answering the phone or texting. You should pay more attention to your girlfriend's life and care more about her, instead of thinking about whether she has replied or not, and you don't have to wait for her to reply. I hope I can help you, thank you, and sincerely wish you happiness.