How long should I wait before I assume it's over?

My boyfriend and I had been dating for two years before splitting up for a month. One day he texted me saying he was sorry that I wouldn’t talk to him anymore because he missed doing things with me (hanging out, going to the movies, etc). I replied to him that it wasn’t the fact that I wasn’t willing to talk to him, it was a problem of how much it would hurt seeing him with someone else and not wanting to deal with the pain that would come with being JUST friends. We talked about it and decided that we would take another shot at our relationship. Since then things in general have improved with the exception of one thing…I never hear from him.

In his defense: (because I want to marry him and have my children with him…we’d talked about this as well
He works very long hours and does manual labor. The short period of time he has to himself is spent sleeping or taking care of everyday things. He is also trying to take classes so that eats up a lot of his time as well.

Please don’t misinterpret my complaint-I don’t have to talk to him everyday but I would like to talk to him more often than I have been lately. By lately I mean this week I haven’t gotten a single text, phone call…nothing. He’s a very busy individual, however, it doesn’t take very long to send a quick text just saying hello (in my opinion that’s the beauty of texting-you’re busy but you can still communicate with someone).

I feel that being able to just call or talk to someone about your day is vital for a relationship and the fact that I can’t even get a simple hello from him makes me feel so low on his list of priorities I may as well not even be on it (I may not be anyway).

I haven’t tried to call him or text him for a week, obviously he hasn’t tried making contact with me either. I want to bring this to his attention but I’m not really sure how. I don’t want to come off as needy to him but I would like to know what the deal is…especially since marriage and furthering our relationship has been discussed. Any ideas would be greatly appreciated