Was I meant to date guys age 18 and 19 online or what.?

My first boyfriend found me on facebook and asked me be his girlfriend but after 3 month he broke up with me .howAnother guys found me facebook too and asked me to be to be his girlfriend online too. I am that guy girlfriend . Idk if guys my age was meant.to find me online and if meant to dates guys online.
In the school I go only 3 guys asked me out but I rejected them because they was too young for me.thier ages was 14,15 and 16, my age is 19. My ex boyfriend was 18 and the one I am dating now is 19. So was I meant to date online guys and are guys meant to find me online. Please answer this question as and fast as possible.