The Friendship Study,

A former firefighter at loose ends and an academic with a confidence problem join a friendship study--and quickly become more than just friends--in this steamy, emotional romance from Ruby Barrett Jesse Logan doesn't want a fresh start. He wants his old life back--the life where he was a firefighter, before an injury made that impossible. The life before his grandfather's Alzheimer's got so bad that he doesn't recognize Jesse anymore. When a friend tells him about a paid psychological study that could prove enlightening, Jesse sees it as a chance to get back to the man he was before the accident while making a little extra cash. All Lulu Banks is asking for is a fresh start. Back home after a devastating breakup, she's struggling to find her place. She's always been a lot, and she knows that--too loud, too eager, too obvious about her feelings. For her, the friendship study seems like a great idea--until she's paired with Jesse Logan, who recently ghosted her after a blind date that led to a steamy make-out session. Now, that old familiar tension is back. The two are frequently paired together on study assignments, and despite the program's strict "no romance" rule, they're quick to find a work-around that allows them to explore their tenuous connection. And soon they're on their way to total self-improvement... As long as they don't get caught.