Insecure about genitals (17 Y/O Gay male)

hi. so,about 4 days ago i got out of a relationship with someone--it was my first relationship actually. and i've been holding my tongue for a while and today i decided to snap after being ignored when i'm tried being nice and all he did was ignore me. i lashed out and told him what i thought of him. we were both saying some pretty horrible things,but only one of the things he said stuck in my mind. i revealed to him a while ago that i was insecure about the tip of my penis. i'm circumcised,so that's weird,and i also have what i found out today are called Fordyce spots. that's what i'm most insecure about. he was saying horrible things about it--granted,everything we were saying wasn't exactly nice--but it was this insecurity he kept harping on about. i don't have many friends,and the friends i do have i can't exactly talk to about this. i'm closest with my mom,and it's definitely not something i can talk to her about. i was the one who started the argument,so maybe i deserve this,but i wasn't gonna put up with being walked on anymore--especially when we're not even together?

i just needed to put this out there. any advice would be really appreciated. thank you