PLEASE HELP ME!!!

i first met my best friends cousin about two months ago. I noticed that I kept catching his eye, and I saw him stare at me from the corner of my eye. I also noticed that he kept brushing past me. my friend told him to give me an arm wrestle, so i did but instead of repeatedly giving me an arm wrestle like my friend, he only did once and basically jumped up after i lost (he’s really strong!!) and went and sat on the bed…extremely quickly! he offered me some of his drink a