Tattoo

My husband has a tattoo and he’s always hated it and was weird about it. I asked him multiple times if he was with anyone when he got it. I’ve always had a feeling that he wasn’t telling me the whole truth. Well he was showing someone the tattoo and saw my face because that same feeling crept over. He asked what was wrong I said I don’t want to get into it and never mind he kept pushing and pushing. I said who were you with when you got it? He smiled and skirted around the question. Then went in for a hug and I took a step back because he lied. He was with his ex when he got it. He lied for years complained for years and did nothing about it. He said he couldn’t change the past. He threw it in my face that he raised my son(who’s not biologically his) and that I wouldn’t be able to do the same if I was in his shoes. He said he told me and I forgot I doubled down and said he went alone multiple times. He said if he did it’s because he didn’t want me to look at it and see that each time I see it because now I will and asked me I agreed and said that is what I will see. I will also see the 18 year lie. I wrote him telling him that if it was reversed he would have a hard time accepting this. I said he could have handled this years ago and saved me this hurt. He is very defensive saying I’m making him feel gross in his body because I’m not being affectionate. My nervous system is shot because he’s had a past of lying, betraying, crossing boundaries with women. I’m sad that he just kept it and did nothing or was honest so I could help him. He says he doesn’t have to look at it so it doesn’t bother him but I do. I don’t even know what I’m asking I’m just hurt. Advice on how to move forward?

tl;dr Husband lied about his ex being with him getting tattoo for 17 years.