Harry Potter and The Secret Betrothal Bond

This is about the betrothal bond between Harry James Potter and Ginerva Molly Weasley. But Harry didn't end up with Ginny, it's a beginning Harry-Hermione ship which in the 2nd chapter develops from HP/HG ship to a HP/GW because in actuality someone slipped Harry a love potion in order to get revenge on Jame Potter,(Harry's father). Who wanted Revenge? Severus Snape wanted revenge.