Short answer
Transference is often related to feelings felt toward parents, but not always.
Background
Transference (Hughes & Kerr, 2000) is
the phenomenon whereby we unconsciously transfer feelings and
attitudes from a person or situation in the past on to a person or
situation in the present. The process is at least partly inappropriate
to the present
According to (Ladson et al., 2007), transference are
unconscious feelings that are transposed onto another significant individual.
These feelings can be beneficial for therapeutic purposes, but intense, sexualized transference can be disadvantageous. Sexualized transference is
any transference in which the patient's fantasies about the analyst
contain elements that are primarily reverential, romantic, intimate,
sensual, or sexual.
The authors give an example of projections of sexual feelings experienced during early childhood relationships.
So although transference per se is often described in relation to parental feelings of submission, vulnerability and openness in a relation between therapist and client, transference can take other shapes.
References
- Hughes & Kerr, Advances in Psychiatric Treatment (2000); 6(1) 57-64
- Ladson et al., Psychiatry (Edgmont) (2007); 4(3): 47–50