1) Parents

We often imitate same-sex parents. We can carry some of their blood types' personality traits. We also may be drawn to a partner with the blood type of the opposite-sex parent.

2) Opposites attract

In a social settings, we can be drawn to those attracting a different type of crowd, which can work also in a workplace setting. We don't get them, but we see them getting results we don't. Many times in such relationships, attraction can completely vanish when social and/or work related surroundings alter.

More to come...