ICYDK, a very famous person shared your Pisces sun square Sagittarius ascendant: Elizabeth Taylor.
Breath taking, British born beauty and larger than life personality who, according to biographers and people who knew her, swore like a trucker, had a wicked sense of humor and an IDGAF attitude about respecting boundaries when it came to the sanctity of marriage.
After her third (?) husband died, she had an affair with a very married Eddie Fischer, whom she eventually married and dumped for a very married Richard Burton with whom she had an affair while still married to Eddie before the two left their respective spouses and got hitched - twice.
However, she was also a great humanitarian/philanthropist, who went to bat for people living with HIV when they were largely shunned and shamed by the public.
Piscean compassion and utopian dreams + Sagittarian inappropriateness and generosity = wonderfully complex human being IMO.