Penetrative

Sex doesn't have to be penetrative.

Muons are charged particles similar to electrons, and scientists say they are "highly penetrative."

Would'ſt thou be window'd in great Rome, and ſee / Thy Maſter thus with pleacht Armes, bending downe / His corrigible necke, his face ſubdu'de / To penetratiue ſhame […]

[T]he penetrative Sun, / His Force deep-darting to the dark Retreat / Of Vegetation, sets the steaming Power / At large […].

I've been in a relationship for nearly a year and we have an amazing sex life as is, but we've never managed penetrative sex.