She doesn't want him to ejaculate too fast.

Xev Bellringer is a very horny girl, and likes to play with men. After seeing a porn magazine she goes with her wet pussy to jerk off her boyfriend. But she doesn't want him to ejaculate very fast, so she masturbates him very slowly, licking his cock softly and slowly, stopping before he ejaculates, until he can't take it anymore and cum into XEV's face, which is more horny than ever feeling how semen slides down her face.