Me and my boyfriend were dry humping I only had spandex on. Theses spandex were not the thin layered one, they had the normal outer spandex material with another layer inside that was very think. I was a little wet that it left a stain on the inside. He did not ***, and says he had no pre ***. If I am correct this could not lead to pregnancy. If you can please give me more details about this subject.