Why, I send messages every day to harass the boy I like, bombard him indiscriminately, and I don't reply without blackmailing him. What do you mean?

Alas, don't chat with the opposite sex if you have nothing to do. Talking about yourself will produce feelings. He began to reply to you, perhaps out of courtesy, but later ignored you and didn't delete you. Maybe he doesn't like you, but he doesn't want to lose someone who likes him. Hot and cold, playing hard to get.

You are a few years older than him. You are all older youths. If it is really impossible, then give up, you can't delay.