My boyfriend is divorced and is very much a part of his children's life. Their mother is the custodial parent but is inattentive at best. His 15 year old daughter sleeps in his bed during biweekly weekend visits. I think he needs to grow a set of balls and set boundaries and say "no". He is afraid of alienating her. He sets no boundaries as it is in any area...the two daughters control his life. But how is even wanting to sleep with your father as a teen and with your teen as a father remotely normal??? It creeps me out.