Unwrapping the Innocent's Secret - Caitlin Crews
Secret Heirs of Billionaires

-six-years later H decides to look up the novice nun he deflowered while he was recovering from injuries from a car accident.
she discovered she was pregnant. tried to contact the hero, after years gave up. She knew he was rich and successful and she was resentful he left her after one night.
The H/h each take turns blaming the other for their situation. For revenge, heroine makes the hero wait a week to meet his son. hero works up anger at missing his son’s life. When hero forces the heroine to marry him and move to Rome, he treats her with contempt

Bound by Their Nine-Month Scandal - Dani Collins
(The Montero Baby Scandals #3)

Painfully insecure and media-shy heiress Pia is duty-bound to marry well. So illegitimate Angelo is completely unsuitable husband material. Spanish tech tycoon seduces Pia with an evening of bliss…that leaves her pregnant!

Montero Baby Scandals / Wrong Heirs
.5) ♡The Marriage He Must Keep (Alessandro Ferrante & Octavia)
1) ♡The Consequence He Must Claim (Cesar Montero & Sorcha Kelly)
2) ☆The Maid's Spanish Secret ☆ (Rico Montero & ☆Poppy☆ Harris) ☆
3) ♡Bound by Their Nine-Month Scandal (Pia Montero &Angelo Navarro)