"surprising" my fiancé.

So this afternoon my friend and I decided that we wanted to go to the mall in my town. Once we were there and just walking around we say a lingerie store and we decided to go in because we wanted to surprise our SO's. TBH I was super exited about it because I wanted to wear something super sexy for him. So we go in find what we needed/wanted and left. My friend shows her SO what she bought and he immediately loved what she picked out! I showed my SO and while he liked it he told me he didn't want to have sex. Honestly to me what I bought was a complete waste of money and I honestly regret buying it now.