He could feel his blood boil when you spoke to another guy again. Although he never declared his feelings for you, he had a huge crush on you, and the more he tried to deny it, the stronger his affections for you became.

That was it; he moved quickly towards you, a stern look on his face, and gently put his arm around your waist, possessively. He glanced at the other guy as if he were warning him to back off.