Eh , i don ' t want to get too deep into this subject . But my mom is a Christian who DOES read the bible every single night . And she also is a Doctor who is a professor at a college . And she is extremely pro science but retains her Christian beliefs because she does not take the bible literally . aka genesis But rather looks at it more in a philisophical point of view of what the stories represent , and how she should live her life and ETC . I see little harm in that , and honestly if most religious people were like that i would prob be a Christian . But really what i want to say here is there is a chance your GF won ' t leave Christianity . But weather she does or does not you should not try to force her one way or another but support whatever decision she makes . If for nothing else brownie point in the relationship .