I think I'd have shied away from the prospect of dating a twin, if both women were living in the same town.
I do remember an episode in a BC village of about 700 people. There was a guy, Rathy, a talented singer & guitar player, who had married a woman originally from Australia, and they had a daughter. Rathy's wife had an identical twin sister who also lived in the village. I could never tell them apart.
Well, Rathy had a roving eye, and while his child was still quite young, his eye drifted to his wife's twin sister. An affair ensued, and so did an upheaval among the three — Rathy, his wife and her twin sister. (

The marriage didn't last too long after that.)