I do it all the time, i remember being in a department store and a young woman was trying on a coat, her Husband was stood beside the pushchair huffing and puffing, he was sulking like a teenager, she was saying how much she loved the coat and hadnt had a new one for years, he replied that it was horrible and didnt suit her and anyway he was going away the following day on a stag do and if they bought it he wouldnt have as muuch money as he wanted to take.
I appeared from behind the handbags and told her she loooked like a model in the coat and was just so gorgeous, her face was a picture( so was his) she smiled, gave me a hug, said thank you and went off to the till to pay for it.