The easy way out of course would be if Beth decided to terminate her pregnancy. But she might be asked why, and such a difficult decision for a woman might prompt her to say something. The wrong something for Rufus.
He decided not to push things. He would let her decide. Whatever her decision, it wouldn't affect the ultimate result, but playing Mr Nice Guy now might keep the finger of suspicion pointing well away from him.
Separately he was working out a termination strategy for Beth herself, with or without child.
And Rufus's emotional side? Mac had terminated that!