I’m 16 and my penis size is like 1 inch and 3-4 inch fully erected. I’m 6’0 weight about 240. One thing I think is because of my weight? Not sure but please help me I’m in a relationship and we are getting to that point where we will have sex one day.
Being heavy can make your penis "appear" shorter. Any layer of fat on the groin hides your length.
Average for a 15 year old is 4-5" erect. It can grow into your early 20's.
If she loves you it won't matter.