Could you give us some more details about what was going on before the communication stopped and how long he hasn’t spoken to you?
Did you guys talk, text, phone or e-mail everyday (or how often)?
What did he say to you (and by what media did he say it) last time you were in communication?
Did he sound desperate, agitated or angry or worried the last time you were in communication?
I would say to you, try not to panic at this moment. If you haven’t tried to call or e-mail or text him since your last communication, he may indeed be waiting for you to contact him. Some people are just like that.
And another possibility is that if he is poor (lost his job, going throgh a bankruptcy or foreclosure) he may have had his phone/computer service cut off temporarily. One of my close friends is going through that and she has no means of communication at the moment. I have to drive over to her house if I want to talk to her and she lives 40 miles from me.
If I were you, I would send (by whatever method you generally use with this fellow) a very brief, but slightly worried sounding message like, “Evan, I’m beginning to get a little worried that something has happened to you, or that I have done something wrong. I haven’t heard from you in X amount of days and we had been talking every day and I assumed everything was going great. Please just send me a note or an e-mail or give me a call. I don’t mean to disturb you, but I need to know what is happening to find out if you need any help or if I can make amends in any way.”
At that point, I would give it a week. Then if you really do think that there might be some type of foul play, you could try contacting one of his friends (or his family if you know them well enough). I think you probably have an idea in your head what might have happened (such as him going back to an old flame, or simply breaking up with you by ignoring you if you know that you two were having problems) If you truly weren’t having any problems that you are aware of, you could actually have the police do a check up on his house. One of my female friends dropped all contact with a bunch of us a few months ago, we knew her husband was kind of a weirdo, so that’s what we did and it turns out that the weirdo husband was isolating her and mentally abusing her. Her family is planning an intervention as we speak to go and try to get her to leave. This is probably not the case with your boyfriend, but is there a possibilty of some type of fowl play that might require the police?