Tell them about Rich Earth

You look around and without saying a word you walk to the front and lock the door. You walk around the place and check that there is no one you didn't notice in the shop. The girls look almost scared you are going to hurt them and you let out a laugh pulling out a bale of rutbloom and plopping it down in front of them taking a bite to show that there is nothing wrong with it "Ok but... Well, I moved out here partially because too many people found out about this story. So you girls have to swear to secrecy on this ok? Tell no one ever, don't mention it don't talk about it amongst yourselves, after you leave here you never mention it to a soul." the girls all have eyes as wide as saucers but nod clearly confused and scared "Eat, those are my favorite." they look down and all take a few bites while you compose yourself for your story.

You take a deep breath "I was a little younger than you, still in school, just trying to get through the days." You feel a little sad thinking back like this "Well anyway I went to this party thrown by some of the older kids. Nothing too unusual, drinking, games, you know a party." This is the part you fear talking about to them or anyone. The girls are still eating, small as they are they are already through most of it but they look up as you take a long pause "um so you are good at parties like pinky? that..." you chuckle "Well yes and no. So I was a little, well smashed, I had way too much to drink but every pony had particularly this filly I fancied called Rich Earth." they are paying rapt attention now, the emotion in your voice as you talk about her is a little heartbreaking. " She wandered out into one of the rooms and kind of passed out and I followed her. She was so pretty laying there with a cute little smile on her face, her mane all messed up, crumpled in a heap flank in the air." You are lost in thought remembering your first love, the girls have lowered their attention as you speak. "I couldn't help myself, I just wanted to give her a kiss, she never paid any attention to me..." the girls nod, but not in understanding their eyes are following your massive horse cock as it slides out of its sheath and starts bobbing and dripping "she barely responded but seemed happy about it so... well I went exploring a little, I kissed her body and her flank... and the smell of her estrous... well I had to take a taste." the girls all inhale sharply "I know it was wrong but when I did she made the happiest sound and pushed into me so I kept licking for a while until... well until I couldn't take it anymore and mounted her..." the girls look up with a confused look of shock and... excitement? "I pumped into her and she made noises of joy I could only imagine up to that point, inside of her was heaven and I never wanted to leave but... well... That kind of fun doesn't last forever and after what felt like forever but if I'm being honest probably wasn't a whole minute, I was very young and hadn't ever done it before, I filled her warm pussy with my thick cream." the girls don't gasp again at this, maybe they don't know where foals come from?

"But when I woke up the next day someone mentioned that I had my mark, don't ever remember it happening I was too caught up in what I was doing..." you look at them, they are very worked up. Maybe you could make a pass at one of them if their friends leave or... if even one of them understands...