My problem was that I was too shy.
Take the time when Mum and I kissed under the mistletoe at Christmas. Admittedly, she'd had a few glasses of wine, but we'd never kissed like that before. She pulled me under the mistletoe, laughing, and took my face in her hands and kissed me on the lips. She was wearing a shortish skirt and a sleeveless silk blouse, with a sprig of holly in her hair, and it felt marvellous when I put my arms round her.
But then I felt her soft lips moving on mine, and her bare arms slid around my neck. Involuntarily, I held her closer, and her body moulded itself to me. The kiss lengthened — it must have gone on for over a minute, which is a long time when you're kissing your mother, and it would have been impossible for her not to have felt my growing erection pressed against her belly. Her eyes were closed, and then the tip of her tongue roamed over my lips.