Been there....oh man have I been there.
The way we get through it is a lot of compermise and restraint. I restrain myself from texing/emailing/iming/ and ringing him a million times a day when we are aproaching my "no contact limit" and he recognizes that I have that limit and does his best to give some sort of contact when we've hit that limit.
My limit has expanded. When we first got together, the limit was 24 hours. This caused more problems than anything else and I realized if I wanted Jounar in my life, then I'd have to expand that limit. I'm up to 7 days now. I've talked about the varying stages and progression of thought durring these 7 days here before.
It sucks, and it doesn't go away, and I don't think it hurts any less, EVER. But it does get more bearable.
My current limit is two days if there's been no previous notification of absence. I'm fine the first 48 hours, but I need to hear from him on that third day. If we know contact will be impossible for some reason (travel, work, school, or family reasons), I'm pretty okay. The longest that one was tested was about a week, which was frustrating but I could deal without the crazy feelings.
If you don't mind my asking, how did you go about expanding your limit? Any sort of tricks or exercises you used that worked for you would be really appreciated. While we've agreed it's something we can work on together, outside tips would help, since it really is my issue, not his. He's so important to me... I don't want this kind of thing to come between us.