The second book of ONE MORE TIME.
There must be a significant reason why they had met again. People were given second chances because fate stepped in and pushed people into what they wanted to do anyway.
So, if fate had any hand in trying to give them one more chance at love, she was willing to take it. But, if it wasn't about their love, maybe fate wanted to give Lauren a second chance to be there for her son, their son.
*Cover credited to Slothtato*