Phasma gets her hands on the two of them, and sees the pilot who she blames for the loss of her FN-2187.

Overcome with jealousy, rage, and resentment, she beats Poe in front of a restrained Finn, but makes some kind of comment on Poe being "pretty"

Finn, having seen this kind of leadup in torture/captures before he left, freaks out and is forced to watch as stormtroopers are led in and Poe is forced to suck them off while they fuck his face.