I ruined his furniture?

My boyfriend of 3 months and I are throwing a Halloween party. So I cleaned his entire house for him. After cleaning his dresser in his bedroom I noticed the wood stain came off the top of it because I used the wrong product. It is super obvious so I think he most likely noticed but just didn't want to say anything (I'm not sure). I don't know what to do. I haven't said anything about it but I feel awful and would be willing to restain/try to fix it for him. What would you do in this situation?
I ruined his furniture?
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