It really depends on the characteristic of your bf. Today, times are not easy for the young working adults. Competition, high prices etc...Especially for a man who has a role as a breadwinner. If he doesnt concentrate and focus on the career, do you think the lady will still stay by his side and have kids to add to the burden? I find that men nowadays are getting practical. Work is definitely more important than the lady. No income=No love. Like the Chinese saying goes:"Love cannot survive on only water". To have a stable and comfy relationship, the man has to prioritize work in order to provide for his lady.

It's hard to tabulate the pressure he's facing in work. It's best to support him and let him focus.

If u suspect that he's not interested, best way is get a date on the weekends, somewhere private and make sure he eats so he can think wisely. Do not be defensive or whiny because busy men hate whiny girls and they dont need it. Simply ask, "Do you see any future in our relationship?" perhaps he'll let u on his plans and then u'll have a clearer idea what this man wants in life.