I do think this is an interesting question however unpolitically-correct it will be. A lot of our notions about sexuality seem to be at least somewhat cultural considering how drastically they've changed from ancient times until now, so it seems plausible that it would change your view of sexuality. It's unfortunate that investigating this sort of thing is dog whistling for homophobia.

One of my friends in college considered herself to be a lesbian, had a long term girlfriend, and had been raised by lesbian parents. She's now happily married to a man and considers herself bisexual. I wouldn't be surprised if someone more to the middle of the sexual spectrum were more likely to act on same sex desires if they have parents as an example.