The Formal

It was 1975 and my 18 yr old girlfriend and I were going out to formal, she was a catholic so there was no sex before marriage. We had a fun night and as I dropped her home we fondling each other in the car I eased up her formal length skirt, then felt something very soft. As she had been wearing a black skirt I hadn't considered what was underneath. She wore a delightful long slips which was borrowed from her mother, not terribly lacy but buttery soft and smooth. I was immediately aroused and placed her hand on my trousers, she felt my stiffening penis which after a few moments we released so she could "feel him properly". Her gentle touch felt around the swollen knob and then down the shaft. Soon my trousers were removed, we moved to the backseat, she stressed that there was no sex, I agreed and knowing that it was the beautiful slip I wanted to enjoy asked if I could just rub against her soft slip, she said that was ok. Once we rearranged the long garment so that we could wrap the silky folds around him, I asked her to gently rub. We were kissing passionately and by now she was no longer rubbing me with the slip but embraced me in both arms. she must have been very turned on. and I was in 7th heaven enjoying her mothers slip. The passion was building immensely, i was on fire and about to erupt and I just had to do it. And I did, suddenly and powerfully I shot 7 - 8 squirts right into her lovely slip. It felt absolutely gorgeous, but I felt somewhat guilty and meekly apologised but she was very good about it. Until she saw how much of a mess I had made. then she wasn't so understanding, saying how worried she was that her mother would find out. Any way it all ended well, she was happy that I wasn't hitting on her for sex and from then on she always brought a slip on dates, even when wearing trousers she would put a pretty little half slip in her purse for later. She didn't own any because she was only 18 and in 1975 girls weren't really wearing slips. So she borrowed from her mothers draw and we had some great times. She even offered to masturbate me while I wore one, but I never accepted the offer, being happy for her to wrap the slip around him and do it that way. I don't know why I never wore one, I certainly wanted to. Later when away on holidays we graduated to nighties and I bought her a lovely long black one that soaked up a lot of sperm over the time.