Been having some of the best sex with my ex

This is my first ever entry into this world of amazing stories I’ve been reading.

So let just get right into it. For anonymity her name is Penny.
Penny and I have been really close friends since our break up earlier in the year.
Yesterday, Before she came over, I had bought some white claws spiked seltzer drinks to just have around and for when she comes over. Little did I know she came over and brought some white claws herself haha (yeah I like them a lot since I’m not a heavy drinker).
She had seen this subreddit about women being shocked about how men’s balls do things they had no idea of. So as she walks in and puts the drinks in the fridge, she sits down on the couch and says “let me see your balls so I can see if they really move and do things” I obliged and took my shorts and boxers off. She starts to blow cool air on them and watch the skin retract and she looked at me and said “wow that’s interesting!”.
We watched a few movies and started drinking some of the white claws while I’m still in my shirt only, I started kissing her and hugging her. She then takes her shirt and bra off. I start to kiss her neck and then she says “I should probably take my pants off too huh lol” I said yes you should. As she takes her pants off I start to feel like my dick is going to explode.
Quick backstory, I’ve had sex with other women, even ex’s in the past but no one has ever made me get so hard just from the site of them. She does this by just showing up and as soon as I see her my dick engorge with blood like wow.