You seduce him

"hi Jake! Do you like the new device in our class?"

"hi Ana" Jake steps back because he knows how cruel you're with boys. You like that he's scared by you.

"it's a little too much... I mean, we don't need to be restrained like that..."

You step towards him and put your hands on his shoulders. You make your arms squeeze your breast. Your boobs are almost popping out your cleavage. "but I like to see boys tied!" you smile seductively and notice how Jake's eyes are glued to your breasts.

You lower your hand and touch Jake's crotch. "If you let me tie you and have some fun with your bits, I can do something special for your little friend."

You move your finger up and down the length of his penis. Jake swallows "oh wow... I mean, you can tie me if you really want"

You smirk and walk toward the classroom, and Jake follows you. The room is empty. Without saying anything, you gesture Jake to get on the device with the wooden X frame. You take your time tying him up.