Christianity IS a relationship. We were created in the image of God, the Holy Trinity is relationship, the Holy Family is relationship, every term used by the Church and Scripture is relational: Family, Spousal, Brothers, Community. We are designed to be in relationship, in community, in friendship, in the relationship of our vocation.
The Catechism: 2347 The virtue of chastity blossoms in friendship . It shows the disciple how to follow and imitate him who has chosen us as his friends, who has given himself totally to us and allows us to participate in his divine estate. Chastity is a promise of immortality.
Chastity is expressed notably in friendship with one’s neighbor . Whether it develops between persons of the same or opposite sex, friendship represents a great good for all. It leads to spiritual communion.