I think my brother's friend likes me?

ok, so whenever my brother has friends over, its always like they are staring at me....then my brother's one friend came over a couple of days ago and i saw them at college cuz they gave us the car and they were going somewhere with some other friends. i had my schedule, and i went to show my brother all of the books i got and he kinda backed away. then, his friend came up and peeked in the bag and was like, hey, is that your schedule.....so i showed it to him and he was like, "we have econ together!"and my brother laughed at him and he was all like, "awww sucks for you!!!" and the friend was like "great, ur probably gonna want to sit next to me and steal my notes all of the time" but he was smiling like the whole time. (still smiling) he was like (to my brother) "y u laughing? she's in your math cl?!" and my brother was all like, "im sitting on the opposite end of the room, u'd better not sit by me!" my mom said to them, "u guys r gonna watch out for her right?" and friend said, "when did i get pulled into this?! (while still smiling)" and my mom said, "as soon as u said u guys had cl with her." so, i think thats all that is important. Does he like me? no particular reason, im just wondering cuz it would be interesting to know.