1. He keeps bringing you small gifts.
2. He has trouble speaking when you’re around.
3. He’s happy when you two hang out with his friends.
4. He wants to be with you all the time.
5. He uses his social privileges and masculinity to explain to you things that you already know but that he feels like hey, maybe you can know even better, making himself a Nice Guy™ — something to lord over you later in the relationship if he ever wants a favor.