On Wednesday the newlywed singer posted a picture of herself cuddling up to Evan in a restaurant with the caption "This love is so gooood!!!! My husband!".
Mockingjay actor Evan echoed his wife's sentiments, writing "This love is so goooood!!!" alongside a selfie of the couple in a car.
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Ashlee and Evan, who have been dating since July 2013, try to keep their day-to-day life out the social media spotlight and rarely post comments about themselves except to announce milestones in their relationship.
In January, Ashlee took to Twitter to announce her engagement to Evan, excitedly writing "My baby love and I are ENGAGED!!! Hallelujah Hawaii!!!!!" and posting a picture of the pair dancing at their engagement party.
News that the duo's wedding had taken place emerged a week ago, with reports saying that they had tied the knot on 31 August in a Bohemian-style ceremony held at mother of the groom Diana Ross' estate in Connecticut.
Ashlee was walked down an aisle lit by white lanterns by her son Bronx, while her big sister Jessica Simpson served as her maid of honour. Jessica's children, Maxwell, two, and Ace, 14-months, acted as flower girl and ring bearer.
According to E! Online, the happy couple were married in a short and intimate ceremony officiated by Diana with The Supremes singer later wowing guests by performing two songs, Ain't No Mountain High Enough and Lovely Day.