I'm so sorry you find yourself here, in the 'club no one wants to join'. What a heartbreaking story. To learn that your entire relationship had another person interfering - well that's awful, plan and simple. I'm so sad thinking of what you've been through.
Regarding more lies later, or 'trickle truth' (TT), it's sadly very common. My H did the same, and it was 10 months before I found out the biggie - he lied and he had said he loved her. Crushed me. I can only imagine the pain you're feeling, having spent the last year nearly wanting so much to believe him, probably with that little inner voice screaming the whole time that something was not right.
Please, give IC another chance, It can take several tries before you find one that works for you, but when you do, the sessions will help so much, and right away. It took me 3 tries, but the third was the charm. I love my IC. Leaving my appointments is always a pleasure because it feels so good to just release all of it to someone that's listening, and can help by asking the right questions, and getting you to think about things in different ways. It really has been a sanity saver.
Also, please stick around here. You are member #42621. Yes, that's sad that so many have joined over the years. BUT, there are so many wonderful, caring people that have lived this and are here for you.
First and foremost, take care of YOU. Sleep, eat (or get nutrition drinks to supplement the vitamins), rest. Go for walks to relieve stress. Get lots of fresh air - it is surprisingly helpful.
When you're ready to tell more of your story, or ask questions, we're here for you.
Welcome, and I can't say enough how sorry I am that you're hurting. It's a special kind of hell getting a big piece of new info dumped on you. It erases most of the work you've done for the last 10 months, or at least it feels that way for a while.