Whats wrong with me?

Hi, im from spain so sorry if my english is bad.

Im virgin and im afraid with everything related with sex... I dont know i have plenty of boyfriends but with everyone i wasnt ready. I think is because my selfconfidence thar im ashame of my body i dont know.

I masturbate but i dont know if im doing right, everutime I "cum" it doesnt feel like really cum only a second of something and that is.

So because of this im very very scary if in my next relation i wont enjoy sex.

Also i dont know if everyone else enjoy kissing someone like the books and films show it is.

Thanks if you explain me and talk me.