Everyone in sixth form is in a relationship...Watch
Don't worry about it, no need to form relationships. Chances are they will be ephemeral, anyway
90% of those ain't even gonna last more than 2 years, y u bein so desperate boi/gyal? Uni is where the hot tings at (you can interpret this in whichever way you want) so just put yer head down and these 2 years will go by in a flash.
I'm sure it isn't everyone. And in any case, most of those relationships won't last past sixth-form (if they even last the duration of sixth form!). A relationship may help you get the D, but it won't help you get an A*!