Mars in 6th House Synastry shows that people may have less physical involvement and unexciting love life. But such people truly care for their partners.

Mars in 5th House Synastry shows that relationships between different people are made due to romantic desires and physical attraction with each other.

Mars in 4th House synastry through home, family, privacy, anger, domestic life, sexual energy, emotional safety, and chart modifiers.

Mars in 2nd House Synastry builds connections based on mutual financial interests. Also, the relationships of people are affected by their high energy levels.