I wouldn't mention the non-phone call. They are very aware of what they are and aren't doing. If you mention it you are just rubbing their nose in it, making you the bad guy. Don't be the bad guy, be the good guy ..err good gal.
They want us to be the bad guys it takes the pressure off themselves by justifying their actions/inactions. Its like they are thinking (I'm glad I didn't call, I'd just get prompted about what I'm not doing right). No matter how subtle we "think" we're being .
Make him feel good when he calls next time, by being extra cheery and not bringing up that he didn't call before. That will make him think (Gee, I thought she'd be little depressed when I called, that was painless, I'll look foward to calling next time) corny, but you get the idea
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