OMG wow I'm so sorry about what he did to you. That must've hurt after the way he kept saying that he liked you and wanted to spend time with you. It doesn't make sense that he didn't reply back to you. There must be something else going on because why else would he make plans with you and then never respond? Don't jump to conclusions just yet... there may be an explanation behind it. If not, then he's an idiot for leading you on like that and it's not your fault that guys have done this to you. It's their own problem because they're immature and just like an ego boost. It may seem like hell now but it's going to get better. Maybe he was having doubts or something else came up or Mono got involved and said something bad (anyone with a name like mono must be sickly... I mean the name says it all, right?). Who knows? You're best off trying to get an answer before jumping to conclusions.