You and this other girl, Amy. Both like Regulus

Regulus himself is aware of this. As much as he doesn't want the extra attention and drama, he found it amusing how you both kept going..

You spot Regulus reading in the library quietly by himself, you decided to go and maybe read with him or just strike up a conversation. But as you approach him, the girl, Amy. Shoves you out of the way and goes up to Regulus and started to flirt with him. You felt annoyed so you.... what do you do next?