Gaius is a perfect gentleman during his travels with Alphinaud in the Burn. This does not stop Alphinaud from frantically fantasizing about things this powerful, charismatic, muscular, and just dangerous enough to be interesting man could be doing to him if he were not such a gentleman.

[…]

Valdeaulin has a hold on Gaius’s life. And on Gaius’s body too. The journey to Garlemald is long and cold, so Valdeaulin let his travelling companions to have their fair share of Gaius’s warmth at night too if they feel the need.

It could be all three taking Gaius at once, or taking turns while the others watch, or one of them meeting Gaius after the other two have had their fill. Not necessarily non-con, Gaius as a military man knows that the victor takes the spoils and he is aware he’s no longer a conqueror nor a victor.

Gaius or Estinien are my tried and true Alphinaud ships, but Maxima, Arenvald, Jullus, or really just about any character with a dick and balls will do. Alphinaud has a pussy. Alphinaud is a young elezen with a bright future ahead of him and far, far too many important things he’s working on to have any time to be a parent, so he really, really doesn’t want to get pregnant. Usually, this means anal. This time, the encounter starts as anal, but accidentally or unintentionally, his partner slips into the wrong hole. Alphinaud protests at first, but it feels far, far too good for his partner to stop, and Alphinaud ends up kinking himself on the fear factor of ending up pregnant against his will, especially the physical effects pregnancy could have on his body.