My friend was sitting on her boyfriends lap while kissing.He was not wet. They were fully clothed. She was in her jeans and he was in his gray sweatpants. She did not spot any wetness in his sweatpants. She is mainly concerned because some source stated that sometimes pre-ejaculation cannot be spotted on clothes. If that is the case, is she is in trouble. She was on the lap sideways.There was no intercourse nor grinding. 1)Can she get pregnant if supposse there was any pre-ejaculation on his pants that was not spotted. She is stressed very badly. Her periods also got delayed.