Many people stereotype those in the LGBTQ+ community, and it's very harmful to the process of coming out. There isn't a "one size fits all" look or style that highlights your partner — or anyone in the LGBTQ+ community.
No matter how popular media may make it seem, we're all unique! Don't suspect that your partner is really struggling with their sexuality.
Many times, people assume bisexuals are "secretly gay" or "secretly lesbian" and don't want to "face their truth." This argument is ridiculous and offensive.
Your partner knows what they like, trust them when they say it. Just because your partner enjoys both men and women doesn't mean you get a threesome pass.