Hate to be a wet blanket, but you gave this guy whatever he wanted (oral anyway) as soon as you met him, drove to see him every weekend without any reciprocation and you're surprised he doesn't really want anything serious? When a relationship is totally one sided like that it is a recipe for exactly what happened, which is that the guy knew he had an easy lay who he probably joked with his friends would drive four hours every weekend to do whatever he wanted.
Only knowing you by e-standards Rachel, you need to make sure that you focus on yourself and get your self esteem up so that you stop letting all of these guys use you. You're obviously a very caring person who has a lot of great qualities and is smoking hot as well - but you're a target for any guy who preys on insecurities and you seem to always go after the wrong ones, likely due to something from your past (internet psychology over).
If all of the white knights on here are an indicator you won't have a problem finding a guy, you just need to figure out what you really want.
As for the job, that's too bad but like others have said they usually keep all their options open until the last minute. give it time and it will come.