我的女朋友在看色情片时迅速切换到手淫模式

I'm scared my girlfriend won't need me anymore now that she's discovered she can just watch female masturbation porn and jerk off without me. I mean see how she's comfortable doing it herself following a tutorial better than anything I can offer. It's just a matter of time before she gets a dildo and she won't need me for penetrative sex anymore.