Bosses wife and daughter are evil?

My bosses wife and daughter keep hitting on me! They try to seduce me. I aM a goodlooking guy. They alwaYS hit on me. The last time they did, they said if i didnt have with them i would get fired. The boss knows nothing about it. just so you know the bosses daughter is 23. the wife is about 40. they are both smoking hot. im afraid if i have with them my boss would find out and fire me. but if i dont theyll tell the boss a lie and get me fired.What should i do??/