Slowly, I rimmed the opening of her pussy with my finger, pulling at the tight muscles that guarded her entrance. I felt her muscles relax slightly. The tightness of her opening, surprised me, but excited me, as well. My fingers slid in and out rhythmically, pulling at her inner lips. The added pleasure of my penetration was beginning to bring on spasms, and I slowed the attention I was giving to her clit in order to prolong her mounting pleasure.