Found another interesting video about the placements between Lagna Lord and 7th Lord. This apparently describes the kind of relationship you have with your partner.
There’s … 1-7 conjunct/opposite which is good only during honeymoon phase unless both planets are in good signs 3-11 sextile which is difficult at first but gradually become better 4-10 placements which he says is the best combination (just don’t stay with families) 5-7 trine which is also good in general esp after having children 2-12 placements which is not ideal (native give all to spouse with no ROI) 6-8 placements which is also not ideal (couples often not on same page, difficulties having kids or raising them tog)