Astartes were always interesting men. Naturally when working with guardsmen they weren’t entirely keen on human interactions, which led to odd things.

One Astartes had taken a liking to you, the problem being that they weren't too informed on affection. Now laid in bed his hand on your waist trying to raise your leg. The Astartes looks confused as to why you're exceptionally freaked out, isn't this how affection works?