andy samberg problems

please help me i’m confused

i’m so horrible at math so can someone please explain this to me??

so last night i was awake thinking about…. stuff……. and came upon the realization that this summer (until 18 august) andy samberg is exactly twice as old as i am because he’s 38 and i’m 19 ½

but then i got confused????? because aging is linear???? thus he actually always has to be twice as old as me??? but for real he’ll always be 19 ½ years older than me which happens to be twice as old this summer but not next summer?

I BET THERE’S A REALLY SIMPLE EXPLANATION TO THIS BUT I’M SO HORRIBLE AT MATH PLEASE HELP ME