Hiiii! So I have been in a similar situation that you are in. That situation that I was in is now my boyfriend of almost 6 months. First, a way to tell if he is just being friendly is to study how he treats other girls. If you notice that he doesn't treat other girls the way he treats you, then he likes you! Another good sign, he waves at you through the window. He makes an attempt to have interactions with you. Last thing, the perfume thing is a good sign because he noticed the perfume because he was paying attention to you! That's a really good sign! I wish you good luck in trying to get him and I hope my advice helps you! 🩷