so, there's this guy i work with, who i think likes me but i'm not quite sure. when we work together he is always kind of flirting with me by making inside jokes and always hanging around. im a cashier and he always packs for me and when anyone else packs for me he gets defensive and makes them move... what does this mean? he has a girlfriend but whenever i talk about other guys infront of him, he tries to tell me that they are no good for me and then he quickly changes the subject...and when he comes into the store with his girlfriend and i wave he quickly looks away and he never talks to me when she is around. and when a close friend of mine packs for me, who i am as close to as this guy, he always trashes him and says he is gross... i dont know what any of this means, im so confused. and when my best friend asked him if he had a crush on me, he was like "noo.." but he made this cute face with a smile. he basically flirts with me everytime we work together, and whenever we are on break together we always sit and talk about the most random things and we have a great time. and he always tries to run me over with carts in a joking way when i am walking outside going home or coming into work. any advice?....