President Wife is a Man I Have Amnesia, Don't Be Noisy! ^the couples in both novels are already in relationship from the start
Arranged Marriage BL novels Check out this list...not all of them are already married. Most of these have early romance. By name I can remember these followings : Rebirth to Become the President’s Omega Wife I Just Want to Be in a Relationship Second Marriage of a Wealthy Old Man Beloved Marriage in High Society Didn’t Love You Enough The Submissive Emperor Hope You’ve Been Well My Family’s Omega Has Just Grown Up When an Alpha is Marked by One of His Own Kind Blooming Romance Peach