True, but you have to admit that they watered both of them down. In the Riker episode, she wasn't EITHER sex, and in the Crusher episode, the Trill seemed willing, but Crusher acted like, "well, you're female now, so that's that." Then, there was the DS9 episode that involved her getting reinvolved with the host of a symbiont whose former host one of her previous hosts had been married to. (Follow all that?
) Now, they were both female, but it was watered down again by the fact that when they got married, they were M/F.
Peter David has been a little bolder in his Excalibur series, with the hermaphoditic crewperson and hir relationship with Dr. Selar, formerly of the Enterprise. But that's safely tucked away in novels that most casual Trek fans never read....