Sunshine in Your Smile by Cindy Kirk

 Lauren is the ex of David from the previous book.

She is a schoolteacher, who needs a roommate. Sara introduces her to her European tour manager, Alex. Alex and Lauren previously met, and had a night together., (Sex). Living together, Lauren tells him nothing can happen again. We learn Alex is the Prince of Carpegnia. He doesn't tell Lauren. They hang out, spend time together, sleep together a few times. Lauren finds out she's pregnant, Alex's brother Luc is missing so Alex goes to find him. Lauren tells him it was fun but it's over. Alex gives her space, but then shows up to propose and tell her he loves her. Lauren thinks her Mom told him she was pregnant, but Lauren tells him. One year later they have a son.
Up next is When You Came Along about Drew and Lori.
I received a copy from the publisher in exchange for an honest review.