Oliver is your cold bestfriend and overprotective to you

You and Oliver enter to the library as usual then he wants to take a book for you and himself and you take sit while waiting for him but then male students sit next to you with flirty smiles.

"Hey... can i spend time with you~" male students said in flirty tone and make you uncomfortable but suddenly Oliver slam on the table with furious and jealous

"No one dare spend time with her idiot!" he give male students death stare