Demi Lovato and Wilmer Valderrama are one of our favorite dating couples, and now she's posted a new Twitter photo with her boyfriend Wilmer Valderrama, who attended her concert in Dallas, Texas for her "Neon Lights" tour. He brought along Liam Hemsworth's ex girlfriend Eiza Gonzalez and the rest of his "From Dusk Till Dawn" co-stars!

Demi Lovato posted a photo on her Twitter account with her boyfriend Wilmer Valderrama and his "From Dusk Till Dawn" co-stars with the caption, "Thank you SO much to my #FromDuskTillDawnfamily for flying to Dallas for the night to see the #NEONLIGHTSTOUR!!!"

Demi also wrote, "Best night ever.... So happy right now... Thank you Dallas, TX!!!!! I LOVE YOU!!!! #NEONLIGHTSTOUR"

Wilmer and his co-stars came to cheer for Demi's concert in her hometown of Dallas last night, for her "Neon Lights" tour, E! News reports.

Valderrama and his costars, including Liam Hemsworth's ex girlfriend Eiza González, were in Austin over the weekend shooting for the Robert Rodriguez series, according to the website.

During a recent interview with Extra, host Mario Lopez brought up recent rumors that Lovato was engaged to Valderrama, after the singer posted a loving message on Twitter about her boyfriend.

On Jan. 29, Lovato tweeted, "Sooooo I don't think I've ever been happier in my life than this very moment that I am fully living in..."

"I've heard the rumors, even people who were really close to me called and were like, 'Are you engaged?' No, I tweet one thing...I think the tweet was 'I never felt more incredible in this moment than I have in my entire life,' honestly, it was just because I was healthy and happy and at peace in my mind, and I was looking at the future," Lovato told Lopez, Fashion & Style reports.

"I was like, wow, I have so much going for me and people were like, 'She's engaged.' I was like, 'Honey, if I was engaged, I would be showing the rock off, I'm not gonna be one of those girls that hides it,'" she continued.

Regardless, Demi tweeted to her boyfriend last month for his birthday: "To the funniest, most inspiring, incredible man I know.. @WValderrama - thank you for helping me get through my darkest moments.. You truly are a light to this world and to my life.. Happy Birthday!!!"

Wilmer responded, "who needs presents when the gift of you is real to us all.. Thank you for the blessing of knowing you."

Too cute!