Your Highness, your doting is a little too much... The abandoned young lady is somehow proposed to by the iron-willed crown prince

https://www.cmoa.jp/title/270744/ "I'll tell you what we do in bed after the wedding—" Touched by a large hand, her body aches with pleasure for the first time—... Marquis's daughter Millie, who is troubled by her small stature and being mistaken for a child, has her engagement broken off on the day of her wedding! However, Crown Prince Elcias, who witnessed the scene, proposes to her and tells her that she is "worthy of bearing my child"!! Millie's heart races at the gentle expressions and words that the seemingly large and intimidating Elcias occasionally shows. She is caught imagining kissing him when he presses her, saying, "You are the only woman I long to kiss—" As he sucks her tongue and she feels like she is melting, his thick fingertips caress her all over... What was supposed to be a marriage for procreation feels like she is deeply loved—...! A romance about a petite young lady and a crown prince with a long-standing unrequited love , with a significant size difference and marriage♪