How hard is it to find a sugar daddy, and where do I find them?

I'm an 18-year-old twink and I get hit on by lots of old men,and they always offer to buy me things, but iwant a real sugar daddy that will be more than just a one night thing. iwork part time at mcdonalds and i need someone who is decent looking and not too old. Do real sugar daddies exist in the gay community or is it just Hollywood fiction? and will my sugar daddy expect me t o be monogamous or can i have m yreal boyfriend too?