A few weeks ago I had a get together at my place, drinks where flowing and it was my friends and partners. A couple of weeks later one of my friends messaged me that she needed to address something with me and had a problem with my comment that night. Whilst some people were in the garden I realized it was getting on so I asked people to head inside or keep it down a little. I then went into the kitchen when said friends partner was and he asked where his wife was. I replied 'she's outside, can you not hear her?' in a jokey tone. He laughed and I thought nothing more of it until she tells me she was coming threw the door and took great offence at the comment. I apologized and told her there was no malice but told me I caused a huge row between her and her partner as he tried to tell her she was reading too much into the comment and she thought he was dismissing her feelings. WTF. AIBU to feel this is a bit silly?