Most Helpful Guy
Haha, you partly described me because I couldn't also graduate this year and searching for a permanent job (though I have a part time).
My advice to you, if you feel this way, and if you think that both of you don't have anything in common it's better to break up. If you finish your dead relationship both of you will get an opportunity to find someone more suitable. If you respect him tell him the truth.
Most Helpful Girl
Seems you have no reason to stay with him so don't. You're clearly in an unhappy situation and you will be settling for less if you continue this relationship. It's better to be alone and happy than with someone you don't like. You won't regret leaving him. You may miss him and think you regret it just because that space is gone in your life now that you're used to.