Yes, oxytocin can have a strong effect, for sure. I focused more on the negative emotional feelings that sex can bring about in this piece, as that's more of what I see as a sex therapist and coach. But I've written lots of pieces on the relationship between emotions and sex and mention oxytocin quite frequently in other pieces. If you want to read more, you can find them in this category on my blog: https://www.therapybyleigh.com/human-sexuality-blog/category/Emotions+%26+Sex