The Dangerous Mr. Ryder 2: Harlequin comics

In order to escape the risk of assassination, the spy Jack Ryder is escorting Grand Duchess Eva of Maubourg back to her homeland of England. She and Jack play the act of a married couple as they continue their journey. When they are finally confronted by the enemy chasing them, Eva is thrown into the river. Jack desperately chases her as she's carried downriver and leaps into the cold water and pulls her delicate body from the river! "You came to save me, Jack?" "I promised I would always come save you, didn't I?" Eva loses consciousness while being held against Jack's sturdy chest.