Answer:
According to Erik Erikson's theory about the stages of psychosocial development, Bill is at the sixth of eight stages: the one identified as Intimacy Vs. Isolation, in wich the basic virtue is love.
Explanation:
Erikson established that the personality of any individual developes through eight stages, and the completion of each stage will result in the acquisition of basic virtues.
Each stage is identified by a psychosocial crisis, involving the needs of the individual and the needs of the society.
In this case we are talking about Bill, a man in his thirties who is looking for a romantic partner. This matchets the sixth stage, wich, according to Erikson, usually happens between the ages of 18 to 40 years.
The major conflict in this period centers on forming intimate, loving relationships.
This stage, if completed successfully, will lead to happy relationships and a sense of commitment, safety, and care. If not, it could lead to isolation, loneliness, and sometimes depression.
So, the crisis of this period should result in the virtue of love.