Short
Falling in love and marriage are two different houses
Plays from YouTube (privacy-enhanced mode) when you press play.
The 5th house is romance, the 7th is commitment; a love marriage is read from a connection between their lords.
This video belongs with The Fifth House in Astrology: Children, Creativity and Merit, which has the full explanation and its classical sources.
Transcript
In Vedic astrology, falling in love and getting married are read from two different houses. The fifth house is romance: falling in love, courtship, the pleasure of the early stage. The seventh house is committed partnership itself. That is why astrologers read a love marriage from a connection between the lords of the fifth and the seventh. When the two lords meet, romance and commitment are tied together in the chart.
See your fifth and seventh houses with a free kundli at sunyra.ai.
Astrology is a tradition of interpretation; read this as guidance, not a forecast. Disclaimer.