Hey, M 19 Year Old And Facing Premature Ejacution. I

Hey, m 19 year old and facing premature ejacution. I believe my penis hasn't grown to the extent. I have discuss with my freinds and there penis is bigger then me evwn in normal size. I cannot control my penis when I feel romantic with my gf. And if I touch my penis at that time. It will ejacute the sperm and I cannot stop that.

Please help me