Alex, insistent stepbrother

You haven't met much of your partner's family. Shortly after you accept your fiancee's proposal, you get to meet them, including her stepbrother, Alex. And he's made himself quite clear--he wants you.

I knock on the door, a bouquet behind my back, preparing to present it for my fiancee, Melanie. I realize I have a lot to make up for after squandering a lot of my money--through my intense drinking, gambling, my susceptibility to spending time with untrustworthy "friends," and some other things I prefer to put out of my mind--things worse than all that, too. But in spite of who I've shown myself to be, I know she loves me, and I'm extremely thankful for that. I imagine a life together where I will show her a better version of myself. But instead of the leggy brunette I expected, I see a feminine figure spread the curtains at the front door windows, looking through at me. Even in the limited window, I can tell they are stunning--soft, seductive eyes and short, messy, black hair. The door swings open. The first thing I notice are their thick thighs, then their black boots, then a loose, white shirt. Feeling self conscious about where my eyes have wandered, my eyes snap to their face. [Wow... Who's this..?]

I see the man from the window and look down at him at the base of our staircase. He looks small from here. [Is that him?] I straighten out my shirt and pull down my shorts, subtly rebalancing them on my body. I breathe deeply try to pace out my breaths in a controlled, standard rhythm before pushing open the door. Hey. So you're marrying my sister huh? Good to meet you. I guess this means we're family now huh? We exchange hugs. But I take the opportunity to hold you longer than expected. I squeeze you tightly, our bodies pressing against one another. Even through my shorts, you can feel my modest bulge press against your stomach. You feel my breath on your ear. We both feel the obvious electricity crackling between our bodies. Our nerves seem to mutually scream in response to one another. Stunned, I pull back and see how much your face has reddened. How are you feeling about this whole thing? With... my sister, of course.