Fluid Bonding.

The explicit decision between sexual partners to stop using barriers (condoms, dental dams) within the relationship, typically after STI screening and an agreed exclusive or polycule-internal arrangement. The UK BASHH guidance frames fluid bonding as a personal decision requiring both partners' informed consent and current STI status; not a default that arrives with time. Fluid-bonded partners often maintain barriers with partners outside the bonded relationship.

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