Motivation and ambition needs to come from within. Maybe there's something else blocking him from taking life seriously right now? A few common reasons for this behavior- 1. He doesn't actually see a future with you and therefore, consciously or not, is slacking off until his 'real life' begins. 2. He isn't passionate enough about what he's doing. I know it's hard to have your "dream job" in this economy, but there are still other jobs that he could be happy to go to everyday. I absolutely hate cashier work and I always end up late or calling out, but I don't as much mind waitressing and I'm never late or call out. 3. Emotional issues. The things you described are very common characteristics of a person with depression. Not situational depression or sadness, but a chemical imbalance due to a lack of serotonin. Serotonin gives you "life libido". Without it, it's hard to get out of bed, go to work, focus in school, be responsible, be motivated. Whenever I've been off of my anti-depressant, I can't do any of these things. Depression doesn't have to include moping or sadness, a lot of times it looks like laziness, apathy, or ADD. Adult ADD is actually treated using anti-depressants rather than stimulants.
You should make sure he knows you aren't just stressed about this for your own sake. It's also for his own well-being and for your mutual future.
