New here, but had to respond to this one. I remember the first time this happened to me, it was HER surprise for me. We had been fucking for quite a while and he wanted me to cum in her mouth. So, when I was ready, she took my cock and sucked me while I sprayed her throat. Then she pulled me in close to kiss me. No big deal I thought, then WAM, my mouth was filled with her tongue and my own cum. She held my head firmly and kissed me deeply. At first I was shocked, but that turned to lust real fast. While we kissed and swapped my cum back and forth, my cock jumped back into action and she got fucked again. It was the beginning of what we would do every single time we had sex. Well, every time she took my cum in her mouth anyway. I am hooked on it now.