Caught my bf(M26) clicking OF links in IG

My boyfriend (M26) and I (F24) have been together for 1 year, and we celebrated our anniversary last September 16. One of the boundaries we agreed on is that watching porn is a form of cheating. He was the one who proposed this, and I agreed. I trusted him completely and believed he would never cheat in any form because of his strong principles and morals.

Last night, I was checking his IG—he gave me his account without me asking. I don’t know why, but something told me to click on the Link History, and there I found him clicking on OF links and other sexual content. I feel hurt and disrespected. I confronted him, and he didn’t deny it. He admitted the truth, saying he clicked out of curiosity. My boyfriend genuinely didn’t know OF existed before (this is a fact). But the issue is that he did it more than once—even on our anniversary. When I asked him why, the only thing he said was, “Sorry, I don’t know what happened to me, I was just curious.”

He knows I already feel insecure about my body. He told me he didn’t subscribe or anything like that, he just wanted to see what was there.

I told him I’m breaking up with him, but he’s begging me to stay and promising not to do it again. The problem is, I’ve lost respect for him, and I’ve lost my trust. I don’t know if I’m making too big of a deal out of this, but he set the boundary and he broke it.

An hour ago, he even sent me flight tickets to my country. I haven’t replied—I just left him on seen. Now, I don’t know how to move forward. Please advise.