You dont have to talk and hangout with just someone you “really like”. Just “like” is fine! Lol Sometimes i just want to meet new ppl, so when i feel like “ohh this person is interesting”, i can talk to them a lot, or even hangout. So it doesnt mean that i really like or hate them tho. But for the ones i dont really like ( not hate, not like), most cases ends up by the fact that i prefer to listen to what they say without sharing anything
P.s i dont take advantage from friendship, so yeah dont understand much abt your idea of “sake of whatever”