In an unaffected manner. Sincerely and genuinely. Not artificially(adverb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "unaffectedly" in a sentence
"MILD SPOILER ALERT In the episode, change is afoot as TV's most endearing and unaffectedly sexy married couple, Coach Eric and Tami Taylor the sublime Kyle Chandler and Connie Britton face a personal crossroads while Coach's underdog Lions head to the state championship in their last hurrah."
"Pray: Lord, teach me to live my life unaffectedly—just like a child who is completely secure in the love of a benevolent parent."
"The people who influence us most are not those who buttonhole us and talk to us but those who live their lives like the stars in the heaven and the lilies in the field, perfectly simple and unaffectedly."