Hi Miranda
I found what made it easier for me was the clarity I gained over the weeks after I'd got to the point you are at now.
Initially, I couldn't eat - I had no appetite and if I forced myself I was often sick; I had panic attacks; I couldn't leave the house; I had an absolute nightmare trying to get my children to school (because of my inability to think straight, because the youngest acted out her pain, because the eldest was worried and didn't want to leave me... but as long as their dad was happy and in love... right..?
)
I have no family; at the time, no friends either; and there's a limit to how much I felt I could lean on neighbours who were little more than strangers I said hello to. I cried in Sainsbury's, I cried on the school receptionists, I cried on the leader of one of my children's activities...
But once this particular situation had started to calm down (seperated end of Oct, started to feel better middle of Jan) I found that I started to improve quite quickly.
Doing lots of practical things helped - sorting out bills etc so they were only in my name; taking control over aspects of my life that either, he'd been in control of or I'd just been quite passive in.
I started new activities and hobbies, made loads of new friends and there was absolutely no way I'd have ever considered taking him back.
I wouldn't necessarily recommend this, but it worked for me. I set up an online dating account. My photos were 'attractive' but showed me as I really look, they weren't great photos. And I was honest, but positive, about myself in my profile. I didn't want to get loads of interest or responses, I just wondered if anyone would be attracted to the real, unpolished me. And they were. Not loads of men, but I don't want loads of men. I just wanted to know if anyone would ever like me as I am.
Anyway, I've been seeing someone new for around 6 months. I have no idea how long it will last, but he tells me that he fancies me, loves me very much and that I'm the most beautiful woman he's met in a very long time.
I don't think it matters whether your husband met another woman before or after you seperated. Knowing that isn't really going to make any difference to how you manage your feelings now.
It does get better, but you do have to be proactive about it. I know people who have sat and 'moped' for years after a relationship has broken down. Good luck 