Well Gracie, being a ler that has tied up their boyfriend, i got the perfect idea for ya.
First off, got some questions, are you the kind of ler who enjoys having your lee already tied and in their tighty whiteys, or are you like my GF who enjoys slowly taking off one layer of clothing at a time?
If yes to #1, then spread eagled is the way to go. If you don't want his head to move, here's a trick. I hold his face firmly and tell him that Mama’s gonna give him kisses if he holds still. That way, I can tease him, and yet keep him still and aroused at the same time. Like tickle his feet, kiss, tickle his tummy, kiss, tickle his underarms, kiss. I guarantee that you’ll get more turned on as well.
My personal favorite is slowly taking off clothes, whether we’re roleplaying or just tickling for fun. But if I get my nails done, I have my girlfriend undress him which he doesn’t mind at all. She’ll squeeze his legs with her big hips, then she places both her hands around the ankles. His wrists are tied together and he cannot get up. I like to use a French accent and tell her to “Vermove his shoes, or take off those black socks”! My girlfriend likes to hold his naked foot up so I can tickle it, or she’ll pry his lil piggies apart and I’ll get that tiny crevice with my nails or my tongue lol! For me, that’s the easiest way to get his clothes off and still keep him bound and unable to move. It might work for you.
If he won't come willingly, yes, find a couple friends to gang up on him. My girlfriend is almost 6 ft and she had no problem kidnapping JT on Halloween so that we could tickle him. Of course then again, he wouldn't fight back because he loves it lol! But I'll save that story for another day.
Hope I helped out some.