Help - Can't remeber what I book I am thinking of....

[Megan]

Hi all-

I would greatly appreciate if you could me find a book/series.

I remember more about the 2nd or 3rd book.
A guy sees his ex-wife, that no one knew about after she becomes friends with his sister or friend. The ex became friends with the female because she lived in the same condo/apartment complex. I believe the ex moved out of the states to do volunteer work. When they ran into each other again, she resists the guy... He eventually gives up sleeping around to show her he is serious. --- I want to say his name is Luke and her name is maybe Jacina. Could be completely wrong.

The friend or sister was the focus of the previous book(s). She and her guy got pregnant early and had a son. They make it work. Have her friend and the above guy over for family dinner all the time. There is a scene where the guys take the baby to the park.


I would so love any help! It's in my head and driving me nuts.