Graham is struggling in the aftermath of his father's death as well as other personal problems, and Laney is feeling overwhelmed by her single mom situation & fighting bitterness along with an increasing temptation to despair.
The story's pace felt real & the developing relationship between them realistic, though their friendship didn't seem like former besties. That realism did lead to the story feeling a little slow at times
The main characters are well developed & believable. Graham clearly has an "engineer's brain" which tends to be very efficient - point A to point B - but also tends to get overly absorbed in its own thoughts, and can frequently be oblivious to the obvious, as well as bad at normal communication & social interactions.
Laney was a strong woman with many admirable qualities of her own, but I do get frustrated with characters of the "too independent to ask for or accept help" trope, especially when there's a child involved.
Which means Laney has communication issues of her own & they both have too much pride, but I liked that they learned to put it aside & put "people before things".
I have to agree with other reviewers that leaving Mike's storyline unresolved was odd, & there were a few minor issues but overall the story was believable. I liked when Laney told off Graham that she & Bailey deserved to be 1st & wouldn't settle for less - that's real love - and that Graham was willing to do what he needed to to show Laney how much he loved her.
*Clean romance level: sweet kisses
*Religion: generically Christian, some occasional brief prayers to God for help, but nothing preachy