About 20 years ago I was working in Edinburgh. I had a flat in the city centre and usually stayed there in the week and came home at weekends. One week my wife, who was in her early 30's at this point, decided she'd like to come up to Edinburgh for the weekend for a change, so we arranged that she'd get the Friday mid-afternoon train from Birmingham and I'd meet her when it arrived at Waverley station about 9:30 in the evening.
I saw the train pull in and as I walked down the platform to meet her I saw she had a huge grin on her face. I knew the look meant she had something tell me, so asked what she'd been up to as she looked like a cat that had got all the cream. She laughed and said that was very close to the truth, and pulled me into an alcove at the back of the platform. "Feel me!" she whispered, and as there weren't many people about and we were in shadow, I slipped my hand up her skirt. The first thing I noticed was that she wasn't wearing underwear and the next was that she was soaking wet!
We started to walk to my flat which was only 10 or 15 minutes away and she told me about her journey. She'd settled into her seat and noticed an attractive older man sitting across the aisle. He smiled and they got chatting, and got on so well that he moved over and sat beside her. They chatted for an hour or two and she noticed he was touching her more as they talked, a brief squeeze of her hand at first then a pat on her knee, until he left his hand on her thigh, stroking it with a finger. She said she was really getting turned on and so she leaned over and kissed him on the mouth, and placed her hand over his on her thigh, moving it nearer her crotch. They kissed for a while, then he asked if she'd come with him somewhere more private, and she agreed.