But I Have A Girlfriend Now

I promised myself I wouldn't let her get me going again, especially since I have a new girlfriend now. But my naughty stepsister Leana is an evil temptress, a succubus! She comes out of nowhere when I'm about to take a wiz. She's wearing glasses, a belly top & panties - that's it. You can clearly see her nipples through her shirt. She doesn't hesitate to grab & wank my cock a little, but I've been down this road before & I'm not for being teased. So I brush her off & decide to go jerk one off, definitely not thinking about my stepsister. That little pervert popped out of nowhere again & this time I don't think she's messing around.