There are many other topics besides your job, which most lovers won't share with their SO anyway. Talk about music, history, science, outdoors, travel, there are literally thousands of engaging conversation topics on all manner of experiences. We could talk also about childhood, friendships, space, time, the afterlife, and crazy hypotheticals, not just Earthly, humanities type subjects.

Another strategy I sometimes use is to pick a letter, then discuss something beginning with that letter. That or just be zany and come up with random hypotheticals.