So I am going though a similar things for past few days. Boyfriend of 3.5 years (we are different races), I met him on tinder and since then we never looked back. Life has been very good, ups and down being a part of it. We travelled the world together, made so many good memories. When I got together with him, he was coming out of a serious relationship, so it took him time to fix himself (he got cheated on, that's what he told me). So fast forward, we got into long distance relationship as he had to move for work. We kept seeing each other every 2 months. Few days ago I found out he has been using Tinder, updated his profile pictures and his description read "looking for a wife" in his native language.
I was devastated to find out, and confronted him immediately, cried, called him names, and asked him to leave. He didn't leave as he wants to fix this, and he has no place to go till he flies back to his country (flight restrictions) and he does not want to spend on a hotel. He cried, apologised, asked for forgiveness.
So I spoke to him every evening after returning from work, tried to understand to what extent he did what he did, why he did, what was he thinking. His responses: He was on it merely for ego boost, he was using it on and off, installing to see matches, feel good, and then remove (I never suspected anything, no notifications no nothing). He also confessed he has on occasions spoken to a few women but didn't flirt or ask to meet up. He even swore on his parents life that he never met anyone, when I asked him to do so. Anyway I asked him to let me read his chats and see whats been going on, which he didn't, and also the next day he told me that he has removed his account as it doesn't mean anything to him and he is sure I'm the one for him. He always loved me and nothing has changed from his side. I didn't have time to catfish, to know the truth. I know his behavior never changed with me, it actually grew better in all this time. He took steps to be a better boyfriend, to support me and care about me.
At this point, I just don't know how to process all this. How to go ahead with this information and shock.