Demi Lovato [1] and her man love a good workout — among other things. The singer posted lots of photos and videos on her hike in Runyon Canyon with her boyfriend, Guilherme "Bomba" Vasconcelos [2] over the weekend. In one of photos, Demi showed off her man's muscular back while pointing at his butt and smiling devilishly into the camera [3]. The 24-year-old also posted another photo of the two taking a break to stop for a kiss. Demi and the MMA fighter have been dating since January 2017 [4] and from the looks of it, things are going very well!