“Trust in the LORD with all your heart, and lean not on your own understanding; in all your ways acknowledge Him, and He will direct your paths.” (Proverbs 3:5–6)
To some this means keeping the Ten Commandments and by them God directs our paths externally. But to others, it means when our motive is Love, God is directing our path. Because God is Love.
Another way to look at it is when our motive is love, Jesus is Lord of our life. Because God is love and Jesus is God.
We can ask WWJD. But many diverse answers might follow. But if we ask what love would do, knowing that God is Love, then the path becomes clear and we can move along it in good faith, knowing we made the right decision.