Mrs G, I have been following your thread from the start, but have not contributed as you have had a lot of good advice.
I am truly sorry that you have had to endure that your STBXH has behaved like such a .......... (fill in as you wish!)
Two things I would like to add are - the folder on his iPhone labelled A- is most likely to do with adult work.
The second thing is that when my ex did this, he also minimised everything. I rather foolishly accepted what he told me (he also told me that I had mental health problems
but it was when I received a missed call/voicemail that was a 2 minute detailed (accidental?) recording of him at a meeting with one of his sex workers, that I saw the light (couldn't really not at that stage!)
Your STBXH does not have an addiction, he has an entitlement issue!
I am in awe of you, as to you have handled this so far. It is tough, but you will get through this, and you sound as though you have a great supportive network.
P.s I got bladdered quite a few times, so don't beat yourself up, but in hindsight, it doesn't really help.