forgiveness and adultery

its almost been 2 yrs now since  my soon to be exhusband mollested five of my kids as we all slept and ive been a very angry person i cant seem to move past that anger he confessed on our 1yr anniversary and i havent been to church since  he was arrested either everyone keeps telling me if i can learn to forgive him not his acts upon my kids that ill be able to move past the anger and be happy again in all aspects of my life but i feal to forgive that id be betraying my kids and i dont see how that wud better us yes my kids wud have a happier mommy that yells alot less but the kids would retaliate bcus of fealing betrayed my other issue is i feal guielty bcus there were no signs up til the day he was arrested all of my kids were constantly hanging on him  so bcus i dint know i was unable to protect them the other thing is ive moved on with my high school sweethrt and feal guilty bcus the bible says that im being an adulter for moving on and ive searched the bible no where in there does it have exceptions to the rule stating that if a husband mollest your kids that you are free it even says even after divorce any man that marrys a once married woman is an adulterer to so does that meen i can never remarry bcus i really want to share my life with darron my high school luv and father to 2 of my kids  so bad i feal we shoulda ignored are parents and married after high school as planned and none of any of these bad things that happened woulda happened i dont like life lessons any advice would be nice.