The 7th house is the house of relationships and it is ruled by the planet Venus and the zodiac sign Libra. This house is also called the house of marriage but that would be understating its coverage since it also governs professional and contractual relationships, but the one thing that all the relationships in this house have in common is that they are long-lasting and more permanent, whether romantic or otherwise, hence it being related with marriage. The way a person relates with those who are closest to him/her will depend largely on where your chart falls in this house, and what planet is influencing your actions.
The sun in the 7th house places a premium on how you are perceived by the closest people to you, so marriage is a top priority, as well as career success. The moon in the 7th house causes emotional and financial fluctuations in the individual, which in turn affects the way they relate with those around them. Mercury in the 7th house causes the individual to easily feel insecure around others, so picking a partner has to be carefully considered, and although Venus rules this house, its effect in this house makes the chart bearer depend on the perception of others to love him/herself, even though they are attractive, they don’t love themselves which can be a let down in relationships with others.