The forced marriage

So Harry is forced to marry Draco
Harry only ever saw Draco as a friend

(Btw Snape is is Harry's mother
Eric is Draco's step dad (luscious boyfriend))

they were being forced together because Ginny weasley wanted him as husband

So the weasley potters and malfoys decided before that Harry will marry malfoy

as Ginny would use him for money

(I am not in this but my ocs will be)