Complex sentence: Their home in Rapallo was sequestered in 1943 and the couple had little choice but to move in with Rudge, thus the ménage à trois for so long a matter of public speculation became a reality.
Split into simpler sentences: Their home in Rapallo was sequestered in 1943 and the couple had little choice but to move in with Rudge. Thus the ménage à trois for so long a matter of public speculation became a reality.