Teen drama, I need help from my sisters!!

Okay so I f(16) go to a Christian high school. Now over the past few years I have had some non serious relationships with 3 or 4 guys, and they have all ended horribly bc they all wanted sex or sexual related activities (IN A CHRISTIAN SCHOOL, I KNOW!) and I have said no. It seems that the guys I seem to be interested in turn out to be complete players, sexist and\or sexually orientated idiots. What’s happening here? and also, a few nice (shorter) guys have also shown some interest in me as well but me being my 6 foot self has always rejected guys who are shorter than me, but they are so sweet and is this as wrong as I feel it is?