Fyi- just in case you didn’t know.
TOUCH got a bro that likes to give high fives? Back slaps? Are they a hugger? Do they not blink an eye at cuddles?
QUALITY TIME this bro will (as op stated) sprint to spend every minute possible with you. Every second that you guys are together is a declaration of affection.
WORDS does your bro tell you how amazing and great and fantastic and wonderful you are all the time? Guess what…?
GIFTS do they buy you coffee? Snacks, energy drinks, spot you at the restaurant? Did that one key chain removed you of them? Ding ding!
ACTS are they always doing things for you? Ie: Nah bro, I got this, I can do that, need me to get anything for you, I can help with…?
PRO TIP - The way people show love is often how they receive love as well.