Demi Lovato has ''never been more in love''.

The 'Cool for the Summer' hitmaker says things couldn't be better between herself and boyfriend Wilmer Valderrama.

She shared: ''I've never been more in love. I'm so excited to have him in my life as my best friend and my boyfriend.''

And the 23-year-old beauty has admitted she is feeling much more confident about herself after turning the negatives in her life to positives.

She added to Yahoo! Beauty: ''I think I got here because I've worked really hard. I go to the gym every day, I'm taking care of myself, and I'm keeping healthy. I feel like when you put a lot of time and effort into being healthy, you feel it.

''When you're constantly bettering yourself, you're able to accept your body for what it is, and you learn to love it.''

Meanwhile, Demi recently admitted she is ''grateful'' for her boyfriend.

She said: ''We don't share everything with the world. But we do feel comfortable to share a lot. With Wilmer and I and our relationship, he's extremely supportive in everything that I do. He makes me feel confident and beautiful. And I'm just really, really grateful for him.''