Does this kid have a crush on me?

so on monday i was chilling at home very bored and i had weed at my house but i don't know how to roll (don't judge me) i was online on facebook and i noticed my boyfriends friends little brother was also online who knows me and my bf and came to our house before, we chatted and i asked him how to roll and he said yeah so i asked if he can come to my house and roll it for me since its only like 15 minutes away and he was like ok be there in a sec and went offline then came to my house, i thought he was gonna roll and chill for 10 mins then go home but we ended up chilling and talking for hours until my bf came! well he came at bout 4 and had to go home for 9 cause thats his curfew.. i was chatting to him today on fb and he asked me if i had a weed today and i said nah no one rolled it for me (my bf is sick in bed) and he was like you shoulda told me to do it for you, if u want i can come tomorrow after school and do it for u and i was like thanks and he was like np love, i mean love in a friend way... so does this kid seem to have a crush on me? i'm 18 and he is 13... also is it gross to chill with a kid that age at my house with him alone? like i would never do anything with him thats just gross! but yeah, opinions please