I am pushing my tongue deeper and deeper into Catherine's pussy until she suddenly squeezes it tight with the muscles inside her box! I pull it out and stick it back in, this time with force. I feel Catherine's fingers grab my hair. Lesbian sex is like watching your reflection in the mirror, I realize. It's all about comparing your partner to yourself and remembering how you have just felt when getting a similar treatment. Oh boy, this process of comparing and remembering feels unbearably exciting. Okay, it's high time I moved on to her clit. I make my trembling tongue slide along Catherine's pussy, moving from her wet hole to her urethra. Having licked it for a while, I finally reach the tight little hump between her labia. Catherine's body starts to shake in my hands.