Felt Wrong but So Good... Was I the Asshole Here?

I've been with my partner for five years now. She's amazing in every way, kind, funny, supportive. But there’s this one thing that’s been eating at me lately. It started when we were watching an explicit movie together and it had a scene where... well, let me be direct. There was anal play involved. I’ve always wanted to try it with her but never brought it up because I know she’s uncomfortable with the idea. But then one night, after another movie like that, something snapped in me. We were cuddling and I couldn’t hold back anymore, I told her how much I wanted to do this. She looked at me, hesitated, and then said okay. So we got ready... I lubricated everything thoroughly, made sure she was relaxed. Then I slowly inserted my finger... it felt so good for both of us. She moaned softly but also seemed anxious. Still, she agreed to continue. When I asked if she was okay with me entering fully, she nodded, and we moved forward. It didn’t take long before I entered her, slowly at first, feeling the tightness around me, her body adjusting, every inch making us both gasp and whimper. She tried to relax, really did her best... but I could tell it wasn’t easy for her. When we finally had intercourse, it was intense, raw, not just physically, emotionally too. Afterwards, she seemed distant. We talked about how great it felt physically but acknowledged the emotional distance that came with it. She said she was glad to explore something new with me but didn't think she wanted to do it again soon. Now I can’t stop wondering, am I the asshole here? Did I push too hard even though we both agreed to try it? Is there a way for us to reconcile this and still have a healthy sex life together or is this just something that’s going to cause problems between us? Any advice on how to proceed from here?