Leonard also has a sexual relationship with Raj's younger sister Priya (apparently every time she comes to town), despite a pinky swear with Howard that neither of them would attempt to make a move on her, and Raj giving his strong disapproval. When Priya returns, she and Leonard begin a relationship. Raj strongly opposes this, and Penny is secretly uncomfortable with Leonard dating someone else, eventually breaking down and crying while talking with her friend Amy Farrah Fowler. Once again, Leonard is unaware of Penny's true feelings. Subsequently, Priya pressures Leonard into ending his friendship with Penny, which he attempts with extreme reluctance. Penny complies, though it is clear that she does not want Leonard out of her life. Penny eventually resolves to stay in Leonard's life by ingratiating herself to Priya.