Hi guys, I’m M28 chatting whit this girl F27 that I really like, but I have this feeling she is not that interested as I am

she usually doesn’t read or answer during the day, but when she eventually do answer (like after 10 pm) we do chat a lot. I’m worried that she just chats whit me whenever she’s at bed before going to sleep, you know as if “I’m bored I’m going to chat whit this guy a bit” And then she stops replying, obviously going to sleep I guess. What do you think?