Two years ago when this thread started I'd never have thought I'd be posting about an afair; but I've devoured this thread today (to a point!) as now I too find myself in OP's position.
The OM in my case has been a close friend for years and recently made a very serious declaration to me. It was out of the blue; I was standing there and he just blurted 'it' (the l word) out. I'd never so much as batted my eyelids at another man (I've been married for 6 yrs), and I was totally floored.
Since then I can't sleep, I can't stop thinking of the OM. We have exchanged text messages and the attraction between us is pretty strong. The usual story I'm afraid: Have a lovely DH but he doesn't connect with me as well as OM and is not as much as a soul mate.
I'm now determined to make the break as it's interrupting my life. I'm ashamed of myself: how I'm letting this get in the way of me focusing on my children and my DH. I go around in a dream world half of the time now. I feel a bit angry about it all really: Why did he have to say it? Why do I react like this? Why can't I be stronger?
I did post on MN and got a complete grilling a couple of months ago. One post stuck in my mind. It went something like 'you must be a complete twat if you're willing to foresake a good family life every time you get a wet gusset because of some man.' It repulsed me at the time, but funnily enough it really hit home.
And so the world keeps turning... No doubt another MNer will be in the same situation before they know it and the saga of life and love continues.
Keep strong. Don't let us loose the quality of these early family years to what is really just greener grass type stuff. It's really hard, but I can't look back in years to come and know that I threw away good years pining over another man. My feelings for him are not to be underestimated (I've planned my divorce and everything..), but all in all unless you are truely married to the wrong man, then it's best to make the most out of what you have I reckon.