That scene takes place in book two, Dragonfly in Amber, when Jamie sends Claire back through the stones to 1946 before he goes off to die at the Battle of Culloden.
In Sunday’s episode of Outlander, Jamie (Sam Heughan) is blackmailed into having sex with Geneva Dunsany (Hannah James), a young virgin who is betrothed to an older man she does not Amore (much less like).