Wildman, I nearly leapt out of my chair when I saw your post.
I read about limerence a while back and I recognised everything about it that had driven me crazy over the years,
to experience it is to feel the highest of highs and the lowest of lows.
I have tried to talk myself out of it so many times, to tell myself I am a mature woman with a family what is the matter with me, but it is so hard.
It is difficult to stop in its tracks because at first it feels so good and gives you a wonderrful dimension to your life. Then the frustration creeps in and the emptyness. Next thing, woosh, you're back again in the land of the truly fortunate, you wouldnt change a thing, its all marvellous and he/she is the most fascinating creature on earth, hey you're pretty fascinating yourself, then down you plummet, theyre not around, do they actually notice you etc etc. Oh yes, its a rollercoaster ride and no mistake!
I dont know the answer apart from a lot more self discipline than I could ever possess, but you have my sympathy, Wildman and I wish you well.