Nephilim - They Are Still Among Us by Douglas Green

Year 2530 Angels have always been on Planet Earth since the beginning of time. One day, the Angel Michael came to Earth to visit and he met a beautiful blonde, named Carol. They began dating and without Michael revealing his true identity as an angel, they fell in love and she became pregnant. Michael told her he had once been in love with an extremely jealous woman but had since broken off the relationship, which was a lie.