Lyrics? Need help with them please?

I’m writing a song and doing a cover of our song for my boyfriend on Valentine’s. My best friend is helping with vocals and rhythms, and her boyfriend is playing guitar for me. I want to write something like Worldwide by Big Time Rush, or New Classic by Drew Seely. I can only get one line, which is the title of the song: just a little bit in love. It’s bouncy and fun and sweet and sexy, but I need a bit of a jump start. Please don’t tell me to make my own. This is hard and all I need is a little push in the right direction. Thanks!

big time rush lyrics