Not to mention getting away from someone who engages in slut-shaming, biphobia, and speciesism. Especially considering that Spock is also an "alien" from her perspective. Doesn't bode well for a happy relationship for him or her, they're both better off with his choice here.

Yeah, but it's feel like she's the one dodging a bullet here. Consenting adults do what they want but, if you're in a relationship, talk with your SO first.