[dawn]

I understand completely, had the same questions and dilemma myself.  There is nothing to be embarrassed about.

Based on your description of the structures behind your nipples and the shape and nipple development I would say that you have lovely breasts - actual breast tissue and not just fat. Your description matches what mammary glands are like. Look at some anatomical diagrams of breasts and you'll see.  I don't think you're fully developed yet, but you are somewhere in the middle of the tanner stages. I bet they would really be spectacular with some nbe.

For most guys, adolecent gyno goes away in a couple years after puberty, but not for all. A few of us get to keep our budding breasts and sometimes develop beyond buds. being overweight can also encourage breast tissue growth.  Society says we should run off to the nearest surgeon and get them cut off...I say, fuck society. Breasts are awesome. You could probably benefit from the support a bra can provide if you don't wear one already. It will help keep the giggle down and give you a nice shape. A simple sports bra is a good place to start.