Demi Lovato gets "really nervous" when she watches her boyfriend professionally fight.

Demi Lovato

Demi Lovato

The 24-year-old singer has been dating Guilherme 'Bomba' Vasconcelos since last year and, although she thoroughly enjoys supporting his Mixed Martial Arts (MMA) career, she struggles to watch when he's in the ring - even though he "mostly wins."

Speaking on 'The Ellen DeGeneres Show' on Wednesday (22.02.17), she said: "He does cage fighting. It's really dangerous. There are rules but you are in a cage. You can't kick them in a certain area. There's other rules but I don't really know all of them. Yeah of course (I get nervous] but he mostly wins. I don't feel bad. It's a sport."

Since meeting the 30-year-old sportsman, the 'Heart Attack' hitmaker has also taken up MMA - a full-contact combat sport that allows both striking and grappling using techniques from other combat sports and martial arts - and finds it "so much fun."

She explained: "I've been training for almost a year now. It's so much fun. I train MMA."

Demi briefly dated Bomba last July but the pair split a few weeks later and she started romancing ex-UFC middleweight champ Luke Rockhold in the summer.

However, her and Luke later decided that their relationship wasn't progressing and they decided to end things on good terms and focus on their friendship instead.

The brunette beauty set tongues wagging over the festive season when she and Bomba rung in the New Year together with a romantic date in Los Angeles and it seems things are heating up between the couple as she's now publicly gushing about him.

This will be Demi's first serious relationship since she split from Wilmer Valderrama last June following six years of on/off dating because she wanted a "fresh start."

She said at the time: "I think it's healthy to be able to start over with someone else. Being sick was always a part of my relationship with him; I always had something wrong with me. I needed to let go of that. It was hard to depart from somebody who saw everything, but it may be nice to start fresh with somebody. Because that person I was when I was a lot younger is not who I am today."

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