First disclaimer my partner has not shared this information with me, we are in a small community and I am aware of this through other ways.
He has started seeing someone as probably ore of a casual/ FWB situation, they haven't had sex or had a conversation about it yet.
This new person swings, has a lot of very casual sex, glory hole type arrangements, a lot with no barriers, they also engage in some risky kink play. (No shaming here, just facts).
My partner as default uses barriers for intercourse with all casual partners.
This is outside my comfort zone and I would request to start using barriers with my partner both for penetrative sex and condoms and dams for oral sex.
I have seen a lot of talk in various forums saying that asking your partner to use protection for oral sex is punishing them for making choices you disagree with.
I don't think this, I think it is enforcing my boundary around my risk profile- I am really interested to hear others opinions on how they deal with this.