I need relationship help

I’ve been addicted to porn for nearly 10 years. I’ve been dating my girlfriend for about 9 months now. Last night we were talking and I brought up how I joined this app and I was stopping for good. I guess at some point in these last nine months I told her that I was not watching porn anymore. When she found out I had relapsed a couple times she completely shut down. We were on the phone for about an hour of me just apologizing and trying to explain but she feels that I’ve broken her trust. She also admitted she used to be addicted to porn but stopped when we started dating out of respect and said “I guess you didn’t feel the same”. The problem is, it’s not that at all. I love her so much and I was lying to myself the whole time thinking I could just stop and never have to talk about it again but I couldn’t. Every time I told her I loved her over the phone last night she laughed. She also said multiple times that actions speak louder than words. It’s now about 12 hours later and we haven’t texted at all (I wanted to give her space to cool down). What’s my next step? How do I explain myself and help us move past this?