Alex starts slamming into her faster, grunting with the exertion of fucking her. Now both his tail and cocks are slamming into her at the same time, filling her up and leaving her feeling empty every time he thrusts in and out. "Ah! Olivia, tell me now, -Ungh!- Do you want- Guh!- me to- Haah!- Use the knot?" He asks, looking up at her.