Imagination that changes

The years passed and then I decided to change Luna's appearance.
I was 15 now, so a 10 year old girl was something that didn't fit me.
Then I thought about how I wanted to see her, I reimagined her with real breasts, and therefore with a real working bra. I imagined her taller but still a few centimeters below me.
I wasn't very good at relationships with girls, but I really wanted to know what a kiss was like.
Then I also started to think about what a girl's breasts felt like to the touch.
With this new body, Luna was more beautiful than ever.
I also started to masturbate to the image of her that I had created in my head. I felt a little guilty, but she was just a character in my head.
While I masturbated, sometimes I started to make involuntary noises. Then it happened that one night my father heard me, I was a little terrified but he stayed outside the door telling me to be quiet and sleep because the next day there would be school.
I never thought I could be happy, having only an imaginary friend.
I spent many happy days thinking about Luna, but above all I thought about her boobs.
One day my body moved as if by instinct, curious I approached a girl and without realizing it, I Touched her breasts. That moment didn't last long, the girl slapped me very hard and I couldn't fully feel what her breasts were like.
I tried to imagine the sensation while thinking about Luna, but it was something I couldn't do.
Not knowing what that sensation is, I couldn't imagine it.
I also tried to ask various girls I knew if they would let me touch their boobs, but no one accepted this somewhat unusual request.
It was something out of my reach, I had no way of feeling that sensation.
I thought and thought about what to do, but in the end I gave up. I spent many days having erotic thoughts about Luna, I was completely crazy about her, even if she wasn't real.
One day a girl confessed to me, she was cute, but for some reason I told her that I wasn't interested in her because I already had a girlfriend, even though it wasn't true.
I had fallen so much in love with my imaginary friend that I closed myself off.
But after a few weeks I thought about that time, I had been stupid, I could have a friend, or rather, a girlfriend. And instead, like a fool, I told her no, and I couldn't tell her that I actually liked her because she found another boyfriend.
From that day on I fell into depression and even stopped thinking about Luna.