My boyfriend just started a new job and its pretty hard work. He is working 8+ hours a day, he gets home takes a shower and I cook him dinner.. he smokes some pot and then falls asleep... I try to wake him up to talk and he gets pissed off... he doesn't want to talk to me anymore. He shows me zero affection and when we do have sex he either busts right away and laughs at me or he will stop and go limp and say he isn't in the mood... I know that he is tired after work but really he has just been crabby with me for the past 3 weeks (all this has been happening).. I love him and would love to get a guys view on this and maybe get some advice on what I could do to make him happy but honestly I'm at my wits end. HELP!!

New job. Long hours. Stress. Exhaustion.
Either be supportive, and don't think it has anything to do with how desirable you are, and wait a month or two - or break up.
If he stays like this past two months, he needs to decide whether his relationship with you is worth some effort. And if he doesn't, again - you break up.

What do you do for work? Who pays the bills? Have you ever started a new and stressful job?