Maybe early on, but I think that towards the end of the original series, and after the reboot (which was later retconned, though I'm not positive if that's the correct term for going back to original issue numbers...) they covered the marriage with a new, fresh style.
Peter being single for so long would get old after a while too. How many chicks must he go through before he meets the right one? I mean, he IS a nerd, after all! lol