What do boys think if they don't reply to their girlfriends for hours?

No matter which boy really has a girl he loves, no matter how busy he is, he will take time to reply to his girlfriend immediately, which is a kind of performance and behavior of responsibility and responsibility. However, the boy you described didn't return his girlfriend's message for hours. Obviously, this boy still doesn't have this girlfriend in his heart, or this girlfriend is not so important in his heart. Therefore, it doesn't matter what boys think if they don't return messages for hours. The important thing is that your girlfriend knows herself.