Sadie Robertson and boyfriend Blake Coward celebrate first year of dating

Sadie Robertson with her boyfriend Blake Coward(Photo: Instagram/Sadie Robertson)

Duck Dynasty star Sadie Robertson and her boyfriend Blake Coward just celebrated their first year of dating on January 11, the same date as her parents' wedding anniversary.

She posted a collage of pictures with her beau on her Instagram account (@legitsadierob) larking around and pulling funny faces, and described their first year as "absolutely amazing."

One sweet picture showed Coward holding up a sign saying "I love you".

"I have learned so much about myself, how to have a Godly relationship, and so much about the incredible man of God you are," gushed Sadie in the caption to the photo collage. "You continue to encourage me & make me better every single day."

The 17-year-old star seems to be high on love as she further wrote that she "can't imagine life without you." She thanked her boyfriend for being "my person," for making her laugh as well as for loving her during the good and bad times.

"Thanks for just being my one :-) 1.11.15," her caption ended.

Her boyfriend Blake echoed the same sentiments as he posted a photo of them goofing around on Instagram (@shake_n_blake47) with the caption, "I couldn't have asked for a better year. I thank God every day for you."

The two are very public with their relationship and they have shared many shots of themselves on their Instagram accounts.

Blake has admitted it's taken him a while to get used to the sudden thrust into the limelight since he started dating Sadie. When they started dating, his Instagram followers jumped to 110,000. Now he has over 132,000.

"It's definitely weird. It kind of happened all of a sudden; it didn't happen gradually. As soon as we started dating, it just kind of hit me," he told AL.com.