That's not how you treat someone you're invested in (his behaviour). He comes off as a user type. Getting you to do all the legwork, all the listening, getting you to buy him things...

It's a shame about the tickets as he doesn't deserve them. But you can always just dump him now?

Edit: I'm sorry to speak so plainly. But seriously, fill the gap he occupied with something that feeds you or advances your life, he's 'there' but is really just taking from you.

It's pulling down your self esteem and the amount of time spent traveling to him and thinking about him means you won't be able to accomplish something else. Like building a real support network, studying for a qualification, meeting a genuinely good guy, or working towards a career change. In your 20s that time is so valuable.