AITAH or is my long term boyfriend in the wrong for visiting websites he promised he wouldn't?

I (34F) have been with my partner (38M) for 8 years. We have one child together (4YO).

When we first started seeing eachother he was visiting c@m websites as well as p%rn sites. I told him that c@m websites are absolutely NOT OK with me but if he wanted to watch p%rn, then that was ok (my friends thought even this was not ok) We had a healthy s£x life and I didn't think about it again.

8 years later.. 1 child later and both of us working.. our s£x life has gone down the drain. Around 5 months ago I found out that he had once again been visiting c@m sites and although I was frustrated I gave him the benefit of the doubt when he told me me wouldnt do it again.

2 months ago... same thing. This time I was very upset, as it literally destroys my self confidence, knowing that he is doing that whilst I am upstairs.. he promised he would never do it again and for the sake of our family I forgave him.

3 days ago and here we are again. Blames on me I guess because I keep forgiving him for doing the same thing again and again. But am I crazy? I see c@m sites as him actually interacting with other women and to me, that is not ok!

I'm making him sleep downstairs right now because I'm just so angry/upset with him. He apologised profusely and says its because we don't "do it" but he doesn't bother to even try with me... so I feel like that isn't a good reason at all.

I love our family but how many times can I forgive the same thing? AITAH for feeling like this? And WIBTA if I end our relationship over it?

TLDR: father of my child promised he wouldnt visit c@m sites anymore but this is the 3rd time in 6 months that I've found out he has still been doing it. Now hes sleeping on the couch and I'm considering leaving him entirely.