Scarlet was the oldest of the three, and obviously showed some confidence with the smile she had on her face as she lowered herself onto your spear. You could feel resistance, just like you did with Aqua, as you penetrated deeper into her, but the sharp gasp she let out betrayed that confidence—without a doubt, none of these mares had been with a stallion—so you hopefully assumed—before, and that both humbled and honored you to both take their virginity, as well as satisfying their urges. You're the luckiest stallion in Equestria!