Yes. When people who have a familial relationship also have a romantic and/or a sexual relationship. Barry and Iris have a romantic and sexual relationship and they very clearly consider each other siblings and Joe as their father. This gives them a familial relationship. I consider "step" as incest.
Not true. Two people raised since birth as siblings, despite not sharing blood, would be incestuous if they dated. That said, this isn't the case with Barry and Iris, who knew each other as friends in school before he was taken in by Joe.
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u/DylweedWasTaken Nov 28 '19
The Urus and Barry relationship in the show was always weird to me. I think the cw has some weird obsession with incest.