He plays a role, in that he created us male and female and ordained the marital act (sexual intercourse) to be means of bringing life and souls into the world (the only lives He brought into existence outside of normal sexual intercourse was Adam and Eve and Jesus. Even Mary, though conceived without sin, was conceived via Joachim and Anne having sex). He also gave us “rules” regarding sexual intercouse-that it shouldn’t be used outside of marriage or when a couple isn’t willing to “be fruitful and multiply”. However, He also gave us Free Will, which many use to disregard His rules, but it doesn’t change the natural outcome of their actions: you engage in intercourse, and you may become pregnant (or impregnate somebody). Just like if you jump off a cliff, God knows you’re probably going to die, but He doesn’t suspend the laws of gravity for you.
In Christ,
Ellen