Ever since their 5th year at Hogwarts, Mattheo and y/n have been inseparable, best couple at Hogwarts. They had their issues with fighting but they loved each other and always overcame it. Until graduation came and Mattheo broke things off to focus on his father’s work. Y/n was absolutely heartbroken over this. She went to a party that next night after graduating and had fun but too much fun. She ended up having a one night stand with Mattheos best friend Theo Nott. When they woke up with hangovers they swore they would never tell him and go their separate ways for good. However, now it’s almost three years later and y/n has a two year old son. Theo doesn’t know about him and neither does Mattheo but all of that changes when she’s out shopping in Hogsmeade with her son.