so sorry sweetie
I went through this too....I just KNEW XP had an OW, but he constantly denied it & told everybody (including her) that I was psychotic & unstable in order to cover his back.
Like you, I tried to resort to a PD but couldn't afford it (the lowest quote I had was £1,500 so yes you would've been looking at a lot of money)..but DID use keypad tracking & reading texts/emails to get solid proof. It's now 5 months on, I'm due our baby any day and still can't deal with why he left me for her
The very worst of it is that, although he DID initially admit to the affair etc, from time to time now he still denies it & makes out that I'm crazy, even though she publicly says she's in a relationship with him!!
And WHY do these OW get involved with guys they know are expecting babies??? Makes me so incredibly angry
I hope so much that you're OK....try & pool everything into your children & friends, realise what an IMBECILE he is (espec to have kept sleeping with both of you!! What a jerk!!!) ...& you can feel a little smug, darlin, knowing that you can bet your bottom dollar, before too many months/years have passed, he'll screw his OW over too.
Huge hugs, & try to have a good Christmas...you're free now if you let yourself be, just think of it that the nightmare's over & one day you'll find someone who isn't such a scumbag xxx