I don't see how strangers on a cycling forum can offer anything towards this other than their opinions. Opinions which, not knowing the full facts, personal circumstances or the people involved can never be given ANY credence.
However, you've not gone to one of the lesser-quality forums like Coronation-streetforum.co.uk or germanshepherdownerslooking4luv.de - no, you've come to CC, and here we know wot we're talkin abaht...innit?
........................
After a lot of deliberation IMO the following is the one and ONLY true course of action now available.........
Mr B should knock Mr A's lights out, then have a threesome with Mrs A and Mrs B with Mr A tied to a chair with his eyes 'duck' (
) taped open......