We get back from a trip and my friend who has been away from his wife for several days has an old lady friend from high school give us a ride home around midnight. We've been gone for several days so he hasn't had any sex. He is rubbing her leg on the way home (but she isn't doing anything back and she is driving), and then they drop me off and go home. Later i find out he was at her house for an hour-hour and a half. He says they just talked. Do you think they had sex or not?