Natal Hong Luan and Tian Xi sit opposite one another under the usual placement rule. They cannot both be resident stars in the same natal Spouse Palace.
Opposite is not the same as together
In a hypothetical chart with Hong Luan in the Spouse Palace, Tian Xi occupies the opposite Career Palace. A phrase mentioning both stars may refer to this relationship rather than co-location.
Words such as resident, opposite and meeting describe different chart relationships. Do not discard those distinctions just because the same two names appear.
Annual labels add another layer
Some charts show natal and annual markers in one box. Check the prefixes and legend before deciding that both belong to the natal chart. An annual Tian Xi appearing in the natal Spouse Palace is also different from a natal Tian Xi occupying the position called the annual Spouse Palace that year.
Placement does not establish a wedding date
These stars have traditional associations with celebration and relationships. Their presence cannot confirm a particular partner or event. Meeting someone, agreeing to a relationship and holding a wedding are separate developments.
Describe the placement and layer precisely, then discuss your actual relationship situation. Counting two auspicious names is not a substitute for that conversation.