Jealous?

Hermione stopped walking and gaped at him. "Belle Rivers? You can't date her!" Fred looked somewhat amused. "Something wrong with her?" he asked, turning to face her. "Nothing besides the fact that she's an utter idiot!" Hermione snapped at him. He smirked down at her. "Jealous?" "Why would I be jealous?" Hermione asked. "Cause you like me." Oh great he knew.