Demi Lovato's longtime boyfriend, Wilmer Valderrama, is hot, and she wants to make sure everyone knows that. The singer posted the photo above on Instagram with the caption: "Are you f*cking kidding me?!! I'm so in love it's ridiculous [heart-eyed and fire emoji] He worked so hard for so long in preparation for this role . . . I couldn't be more proud of him. #mancrushwednesday #fromdusktilldawn." Wilmer shared the photo on his feed first as a sneak peek into the second season of his show From Dusk Till Dawn, premiering this August. Demi never misses an opportunity to show her love for Wilmer and give the actor credit for giving her tough love when she needed it the most during her struggle with addiction, eating disorders, and depression. The question is: when will these two just go ahead and get engaged?