... if it is clearly sought and understood as not endorsing or blessing objectively grave sin, if it does not allude to any union between the individuals that would suggest marriage, if it offers petition for growth in Christian virtue and if it does not use the liturgical prayers and rites of the Church (e.g. the Book of Blessings, the Rite of Marriage).
https://fwdioc.org/pastoral-letter-fiducia-supplicans-en-12-21-23.pdf
