Why won't he open my message?

So last week I saw my crush at a party and he was very drunk, he told everyone that he was going home with me and that he was going to get lucky. I didn't mind as I really like him and we've got history. His friends ended up taking him home and nothing happened. I messaged him and he replied to say he'd gone home. A few days later I saw him and he was sober I was with my friends and he chatted about general things to us and he was really nice to me. I decided to send him another message as things seem to be going well and now he won't open my message. What have I done? I'm confused! I thought things were going well so why would he now ignore me? Please help me make sense of this.

Why won't he open my message?
Post Opinion