Oh no. Painter I am so sorry that happened. We know that we can't believe a word they say, and yet we so want to trust them when they tell us something. It's that heart-brain disconnect again.
That any woman would flaunt a blatant affair is disgusting all around, and it's worse that someone sent you a copy of the photo. I would have had to leave work, too. Heck I probably would have been down for the count.
Definitely skip sending him any texts. He knows that he has hurt you. Nothing will be gained by miring yourself in another conversation with him. Protect yourself by creating space between you , both in terms of time and communication distance. And definitely don't contact her. It won't change anything.
Keep your chin up and stand tall. You have much to be proud of, whereas their behavior leaves nothing to admire at all. He can say he hates FB all he wants, but what he really doesn't like is that his actions were documented and then shared. Affairs flourish in secrecy, and his actions saw the bright light of day and he's not pleased. He knows what he is doing is wrong and hurtful, and he needs to soak in that knowledge.
Take your meds, cuddle up in bed tonight, find some ice cream if you have any appetite at all, and just pamper yourself for a while. You have certainly been through so much.
I'll check back in on you later.
(((Painter)))
H: 44, Me: 45 Married: 20 y Together: 25 y no kids Walk away: 12/15 Asked for temp separation 12/25/15 PA confirmed 3/16 (apparently neither the first, nor the last PA he has had) H filed for D 5/16
