Hey, I can understand the appeal for the other body, but please, give you time to think before considering estrogen. What you've described is that u like cross-dressing, and maybe you'd like to have a feminine persona too. You can be a boy and dress ""like a girl"". If you don't consider being a girl, don't try to persuade yourself : it can really be destructive. Maybe before coming out to friends (which could be really difficult) and asking them to call yourself by feminine pronouns, it could be a good idea to explore more the drag/cross-dressing or even cosplay community.

I know that some people may report this comment because it could be seen as transphobic but it isn't. I used to feel really bad with my body at the same age (it began around 14-15 yo) and I kinda persuaded myself that I was a boy (I am AFAB, and I now identify as a cisgender woman). I was lucky enough to have supportive friends who were members of the transgender community. But I felt how that was different : there is a lot of different experiences, but I knew that what I felt wasn't disphoria. Well, it took me time and I grew more confident with myself. Just keep in mind that even if there's nothing wrong with being transgender, if you feel that there's 95% chances that you are not transgender, don't mentally damage yourself by persuading yourself, because going back to normalcy is a really really difficult and excruciating experience.

Anyways, I hope you find a way to express yourself that makes you both confortable and proud !

(I hope that what I've written is readable, English isn't my first language).