You may be asexual.
There are at least 4 types of asexuals.
Those who have libido (sex drive) and therefore masturbate, and wish for a romantic relationship without sex.
Those who have libido (sex drive) and therefore masturbate, and don't want to have a relationship at all.
Those who don't have a libido and feel no need to masturbate, but still wish for a romantic relationship without sex.
Those who don't have a libido and feel no need to masturbate, and don't want to have a relationship at all.
But you're only 17. Those discoveries (and acceptance of them) usually happen in the 20s at the earliest. So relax and gain some experience whenever you get the chance to, to find out what you really like and don't like.