You we're in your 3rd year while Draco was in his 5th. He was best friends with your older brother, Mattheo. So, you saw Draco a lot and you had gained feelings. You confessed to him but he just laughed it off because he found you too young and he told you to wait until you're older.

Then you transferred to Beauxbatons and you've been there for a year, now you're coming back for winter break. When you walk inside your estate you see that Draco is staying with your family for winter break.