I've looked into this for over an hour, this is so fascinating, my only conclusion is that it's definitely possible.

For some extra context Margaret Trudeau slept with Ted Kennedy among others while married and even partied alone on their anniversary. Allegedly she described castro as "the sexiest man she has ever met" in her book Beyond Reason but I couldn't manage to fact-check it. Oh and also Maggie was 18 when she met Pierre who was 48 but idk if that's relevant here, she had a thing for older men in positions of power?