DEAR MISS LONELYHEARTS: I'm in a new relationship with a wonderful woman and we've been intimate for two weeks now. Something strange is happening. I've learned how to push her buttons and I get an amazing physical reaction from her body. Lately, she's started giggling while having sex. Sometimes it's all-out laughter before, during and after. I thought I was doing a great job; what's with the confidence-killing laughter? It's turning me off to a point where I don't want to touch her. What's going on, seriously?