Help me i think my little brother is attracted to me?

hi guys my little brother is 13 and i am 16, hes a great little brother and is always very helpfull, but lately hes been acting very strange towards me. i know he has a foot since he told me himself(im the only one in our family who knows this) and lately he has been asking to rub my feet, now i said yes because its very relaxing when i get a foot mage ya know. then when he was done with my feet he started maging the rest of my body including my , i didnt say nothing but in all fairness it was kinda weird have my little brother touch me their. anyway i dont know what to do, i mean i love my little brother so much i am just scared he might try to make a move on me or something please help me.