Well this guy is my friend . he around my age like we’re both 15 but imma turn 16 next week and he is going to my sweet 16 and This Monday I didnt know if he was friendly or not but he gave me his sweater to wear cuz I guess I looked cold and then he wanted to carry me like a piggyback ride later on he gave me a hug behind the back and almost fell asleep on my shoulder but

I’m not sure if he was giving a sign or he was just being friendly ? Help ?