The phrase "new boyfriend" refers to a person who someone is currently dating or in a romantic relationship with, but the relationship is recent or just starting. Full definition
I recently watched a really funny comedy sketch online about a girl who's new boyfriend didn't use social media. (inc.com)
If your photos look lazy, blurry or only include selfies and party shots, you probably won't be finding your husband or new boyfriend online. (datingadvice.com)
The father - daughter - new boyfriend dynamic between the three leads is amusing, but it fails to launch emotionally. (waytooindie.com)