Meghan Trainor's boyfriend is ''obsessed'' with her body.

The 23-year-old singer has never felt as sexy as she does now she's in a relationship with Daryl Sabara because he has really boosted her confidence.

She said: ''I never really felt sexy with guys before. No one expressed how they liked my body out loud in the bedroom until I met Daryl. He is obsessed with it -- every inch. And that has improved my confidence more than even '[All About That] Bass' did. He's a champion, so we're in heaven.''

The 'Spy Kids' star has even inspired Meghan's songwriting, and she's using her music to drop some heavy hints.

Speaking to America's Cosmopolitan magazine via text message as she was on vocal rest, she admitted: ''I wrote six songs on the road about him in front of his face. One is called 'Marry Me.' ''

Meghan was smitten with Daryl, 24, as soon as they met and they shared a kiss on their first kiss, which involved bowling and karaoke.

She recalled: ''We went on a double date -- bowling and karaoke. He kissed me at the bowling alley.

''I told my security to step outside 'cause I didn't want to be watched. LOL. He was the best kisser ever. I know I'm really good at kissing, but I was shocked when he was.''

Meghan admitted in December that she was ''in love'' with Daryl after just five months of dating.

She gushed: ''I'm in love! I just had my five month anniversary yesterday.

''We went out to dinner and we did puzzles because I love doing puzzles lately. He bought me three special cool puzzles that are like 3D and we spent the day just chilling. It was awesome.''

And, although it's taken the 'Lips are Movin'' singer five months to drop love into the equation, Megan knew the actor, was right for her from their second date because he spoilt her.

She explained: ''I've never been treated so nicely from a guy...he showed up to our second date with a rose in his hand and I was like, 'Oh, you're a movie, awesome.' I was like, 'You're the one!' ''