The implication of Proverbs 3:5-6 is that if you are not trusting in the Lord with all your heart, and are leaning on your own understanding, you can go the wrong direction. Yes, it is possible, in a time of disobedience and lack of close fellowship with God, to marry someone whom He did not desire you to marry.
Hatari ya Methali 3:5-6 nikwamba kama haumwamini Bwana kwa moyo wako wote, na kutegemea akili zako, utaelekea mahali papaya. Naam, kuna uwezekano, wakati wa kutotii na ukosefu wa ushirika wa karibu na Mungu, kuoa mtu ambaye Mungu akukupangia uoe.