Demi Lovato has been dating Wilmer Valderrama on and off since 2010 but the "Neon Lights" singer recently took to Twitter to talk about her love for her beau.

According to Hollywood Life, the "That '70s Show" star has been promoting his new series "From Dusk Till Dawn" and his girlfriend decided to share just how proud she is of her man's success.

On March 11th, the 21-year-old tweeted, "I'm so excited for #FromDuskTillDawn - @WValderrama I couldn't be more proud of you.. This is your night!!! Congrats my love!! Besitos"

To which he responded and wrote, "Ok @ddlovato, I was wrong.. You keep getting more special.. Haha thank you! I share this with you!"

Seeing as the "Heart Attack" singer is publicly acknowledging her romance with the actor it seems like their relationship is getting serious.

On January 29th, the couple was spotted at dinner together in Austin, Texas and showed off some major PDA.

An eyewitness revealed, "Demi and Wilmer had dinner together at Magnolia Cafe South [Jan. 29] and they both looked incredibly happy."

The onlooker continued, "They were just so obviously into each other, holding hands at the table and smiling non-stop, especially Demi. She's been here before and is always sweet and friendly, but last night she was glowing."

The two were mostly likely having an early birthday celebration seeing as Valderrama Wilmer turned 34 of January 30th.

Lovato wished her boyfriend a special happy birthday via Twitter. She wrote, "To the funniest, most inspiring, incredible man I know..@WilmerValderrama - thank you for helping me get through my darkest moments.. You truly are a light to this world and to my life.. Happy Birthday!!!"

Do you like Demi Lovato dating Wilmer Valderrama or would you like to see the "Let it Go" singer with someone else? Let us know your thoughts in the comment section below.