Ease Me In (The more guarded approach):
I know this isn’t the sexiest topic to bring up—especially now—but I want to make sure we’re being safe and using protection. If not, we’ll need to stop and pick this up another time.
Just Give It to Me (The no-nonsense tactic):
Before this goes any farther, I think we should use [birth control method]. Are you already using something? Are you okay with using condoms?