[lookingfornow]

Clearly, they had a rule between them that was not shared (probably that he was not to finish in someone's mouth). Otherwise, I don't see how other gal could know whether it would be a spit or swallow event.

Frankly, I agree with you. Given all that had gone on before and the other guys desire to "get some," I would have assumed that other gal should have seen it coming (pun intended).

All that being said, not every couple has thought through all of the possible circumstances of a get together. Sometimes people are simply caught off guard.