Venus Mars exchange in male female chart

What’s it’s mean when a female have mars in the trine of Venus in male chart and vise versa in D1,D9,D10,D60 ?
Example ->
Male Chart – Venus in Sagittarius, Mars in Virgo.
Female Chart – Mars in Leo, Venus In Capricorn.
Here trine exchange between male’s mars and female Venus happened trine wise.. so it shows attraction, but when this happens in D1,D9, D10, D60.
what it shows????