My story:
Discovered now ex performing on cam sites 2016. Did it all all times of the day, including when our primary age kids were running round the house. He'd moved a couple of the girls off Chaturbate and onto Skype, so it was very personal and became relationship styled rather than just virtual sex. He got help. We moved on.
Discovered it again in 2018. I chucked him out for a month while he got help. Tried to rebuild, but the trust had completely gone.
Again, 2020. I ended the relationship. This time he was "in love" with a US camgirl, after only 4 weeks of wanking. His daughter can't stand him and hasn't seen him for months. His son is very bitter about it all, but sees him because it's his dad. All our friends want nothing to do with him as he was the great husband, fab dad, do anything for you my friend type of man, which all his friends now know as a double life and feel betrayed by him.
I pity him. So much lost.
When I discovered it in 2016, I found records dating back to 2010. Ex didn't deny it had been going on that long. He said he started by watching porn. He began to need more thrills to cum, so kept pushing the envelope. I found a whole load of crap and content he'd created. Resulting in him performing on webcams for tokens.
All started with him watching a bit of porn in secret. It became an addiction. The more I read, the clearer it became that my story is far more common than known. Because it's around sex addiction, it's far more hidden and feels much more shameful than drugs/drink. This woman is the leading expert in the country
www.paulahall.co.uk/
If I'm honest, the secrecy more than the cams killed my 20 yr marriage...of which my husband was cheating on me for 10 of those years.
My advise OP? End it now. Don't get stuck in the spiral of addiction and thinking it'll get better like I did. Had I known in 2016 what I know now, I'd have ended things then.
All the best.