Wow.. personally, I think 2 months without talking is a long time. I know with my current boyfriend, if I go 2 days without calling him, he freaks out and assumes something's wrong. I guess it all depends on how patient you want to be. I question the fact that he hasn't made any attempt to call you. I just think that's weird.
Also, If he's the one who asked for the break. I think you need to respect that and let him make the first move. Otherwise, you may be pressuring him. He knows your patiently waiting for him {assuming you've made that clear to him}.. now just wait it out. For how long though? I think for as long as it takes for you to realize what you really want out of this relationship. 'accepting the relationship is over" and "how long it takes for him to leave you heart.. {if ever]" are two different time frames. Don't expect it to be from one day to the next..
Just analyze the situation and keep in mind, if its happening now.. who's to say it won't happen again the next time he has a meltdown. As your partner/bf/whatever, he needs to include you in his life, in all aspects. In the good and bad times. Not just shut you out when life s on him. You know?