We know he can’t survive without second income (unless he makes life styles changes which is unlikely). So he simply must have a woman. So he is on a look out. One from work fell out. He keeps looking. If they already flirted before, she might be a strong candidate

He’ll tell her you weren’t working so he had to support you both and then he was in a rush to move out amd he left you everything, so he is now in financial pickle. So he’ll get her to feel bad and help out with money. Well, maybe not that particular woman but whichever will bite.