Growing into Her Role

Dear Princess Celestia,

My bra was getting looser on my breasts recently, so I thought their growth was slowing down, but no!
It was Spike!

H-he was loosening my bra, just to make me think it was slowing!
I-I only caught him because I fell asleep with my bra on from all the exhaustion I got from masturbating.

I grabbed him in my magic and yelled at him about it.
A-as much as it hurts me to do so, it hurts worse that he ended up betraying me first.
However, I’m not sure what he said next was much better...

He, um, s-said that he really liked how big I was getting, a-and that he wanted me to keep getting bigger ~~and bigger and–Gah! No, focus!~~

He also told me about how abusive he thought I was to him, which just... What?!

*huff*

He said that he thought he was just my servant while we were living in Canterlot, as the culture around there seemed to make that a normality.
When we got to Ponyville, though, he saw how friendly everypony else was to each other and realized how ‘demeaning’ and ‘objectifying’ I was to him, which, I guess I can concede I that I was relying on him to do a lot of things, but I thought he was happy about that! From how he reacted when I told him I had a mission for him and how proudly he spoke of being my ‘number one assistant’, I thought that he liked doing that!
But apparently not...

He, u-um, has also admitted that Pinkie somehow got her hands on some of my milk and now her breasts are starting to grow as well! And now that he knows that my milk makes the boobs of who drinks it grow, he started using it a lot more in my food... a-and I guess that I now recognize that he has been feeding me a lot more.
Usually I only had three pancakes for breakfast, but now he’s giving me six, along with a tankard of milk, unless I specifically ask him otherwise. He gives me other snacks throughout the day too, like muffins, cookies, and even cake!
How did I not notice that before?!

Um, anyway, when I was yelling at him, I-I think my body was vibrating enough from my jerky movements and powerful yells that my tits started jiggling... a-and the milk started sloshing around inside them and my arm rubbed up against one of them, and it just felt so soft and warm t-that I couldn’t help but think about how good it felt...
M-my horn faltered a little bit as I moaned, but the next thing I remember is Spike’s ~~hot, sharp~~ claws scraping at my tender nipples that poked through my bra, a-and just, oh gosh, it felt so good!

~~I-I just, mmmf, o-oh fuck!~~
~~*squelch*~~
~~O-oh, y-yes...~~
~~*huff* *huff*~~

Oh gosh, I just can’t control myself right now...
Y-you can see how bad this is getting... so, p-please help me.

*huff*

Um, w-when Spike started t-touching my... ungodly massive tits, ~~a-and firmly groping them and b-biting them, I-I think, h-he just–Mmmmm, FUCK!~~
~~Yes! Yes!~~
~~Oh, oh... f-fuck...~~

Uh, I-I think he i-inserted something i-into them at one point, ~~j-just shoving that~~ MASSIVE DICK ~~in there and cumming into my~~ HUGE FUCKING TITS ~~as they just~~ poured ~~milk onto him and I just–~~OH CELESTIA!!!

~~Oh fuck just give me a minute...~~

~~*Huff* *Huff* *Huff*~~

OHHH-H-H-H!! FFF-FUCK!!
YES, JUST FUCK ME!!
HARDER!! HARDER!!

OH YES, OH FUCK YES!!!

~~*HUFF* *HUFF* *HUFF* *HUFFFFF*~~

OH FUCK OH YES, OH FUCK–S-SWEET CELESTIAAAAA!!!!

~~*Hufff* *Hufff* *Hufff* *Hufffffffff*~~

U-uhm... s-sorry...
*huff*
Y-you see why this is still a huge problem...

But, uhm, yeah; I-I think he did literally... ejaculate into my breasts...

And... like I said before... with the milk... a-and how it makes ponies’ breasts grow...
You should immediately see how much of a problem that is... probably warranting a quarantine or something...

Just... do something… I-I can’t take this anymore, and I’m probably going to lose my mind if this keeps going...
Of course, not discounting the pandemic that will happen if my milk starts being used elsewhere... like in Pinkie’s cooking, so...

*gasp*

S-Spike?
W-w-what are you doing?!

N-no, wait, s-stooooOOOHHHHH-H-H-P-P-P!!!!