Just giving you a massive hug, this was me nearly four years ago, mine married the OW and I'm still dealing with his disgusting behaviour...he barely sees his kids.
However, I've learnt to let it roll off my back now, but it's taken a long time.
Previous poster was so right, he married a woman whose own marriage had ended, and she'd been the OW in two other marriage break ups at their works before eventually getting together with my ex.
They really are welcome to each other, can you imagine, I bet there's no trust in that relationship...in fact I know, as she will only allow him to call me when she's sat beside him, and she reads any texts.....I'm not allowed to email.
Now my daughter is older, she completely sees her arse of her dad for what he is, she hates his wife ( who hasn't been very nice to her) they fed me all this bullshite about her bringing up the kids too...it's an incredible statement to make, after what they did...but the fact is, it's hugely backfired on them, they are having problems building a relationship with the kids are they just don't see them enough, and the kids know fully who is truly there for them.
I'm now at the stage where my dd regulary makes allegations about her,( which are wildly exaggerated) and I'm trying very hard to be impartial...and support her, while trying sensitively to deal with them, without causing hassle. Their response is to refuse to have her....and hers is then that they hate her.
It is horrific, him being married to the OW, but it's clearly testing them...I gain no pleasure from this, it's just sad. I've built up a good support network, I've made friends with a couple of single mums and we really help each other out. You will get there, it just takes time. My moment was when I decided I just couldn't have my kids childhoods blighted by this. But it was only after court stuff was done, and finances settled. So until then, you just need to be very kind to yourself, and take time xx