Some possible sample questions:
Do you expect to get married, or would you be OK with just living together, or carrying on a long term relationship without living together?
Would you be OK with getting married/moving in together after one month, 6 months, 1 year, 2 years, 5 years? How much time would you think is ideal for getting to know a potential spouse well enough to move in together?
Same question as above, only with regards to having sex with the potential partner?
Is it very important, somewhat important, not very important, or nuetral to you to have children?
If your partner wanted children and you did not, how would that make you feel and how would you deal with it?
If you wanted children and your partner did not, how would that make you feel and how would you deal with it?
If you wanted children, but could not produce your own, would you decide not to have children, consider adoption, consider a surrogate, choose activities or a career that involved taking care of children, become a foster parent, decide to have pets instead, other?
How would you feel about having a partner that was considerable older or younger than yourself? Do you think that having a partner that is considerably older or younger than yourself could cause any potential problems within your extended family dynamic, with your future plans (desires, expectations, financial security) or with regards to continuing to love/like/appreciate your partner, other?
Do you expect that you and your partner will have an equal relationship with regards to who makes the decisions, who controls the finances, how the children are raised, which religion (or lack thereof) you will participate in, how the chores are divided up, other? If you don’t expect the relationship to be exactly 50/50 on all things, how do you envision the division of labor and responsibilities and decision making tasks?
Do you expect that you and your partner will be together until one of you passes away, or do you expect that relationships always end and people move from one partnership to the other throughout their lives?
Would you be OK with having something like an open marriage where either you or your partner has romantic relationships with other people?
Would you be OK with your partner, finding another romantic partner if you were to become incapacitated mentally or physically?
Would you think it’s OK for you to find another romantic partner if your partner were to become incapacitated mentally or physically?
Are you now, or do you expect that you might ever be attracted to someone of the same sex?
If you were in a relationship with your partner and you felt attracted to someone else (male or female) would you act on that attraction? If so how? Would you leave your partner, cheat on your partner, tell your partner and hope he/she is OK with it, invite your partner to join in the new relationship, not engage with the potential new partner at all, try to just be friends with the new person, other?
Same question as above, but how would you feel if your partner did any of the above actions, if he/she found a new person that he/she was attracted to? What would you want your partner to do? Drop the other person completely, carry on an affair secretly, tell you about it and continue the relationship with the other person, tell you and break up with you, ask you to join in the relationship, allow your partner to continue with the person as only a friend, other?
How would you feel if you had to take care of your partner if he/she became ill, mentally capacitated or handicapped?
Would you expect your partner to take care of you if you became ill, mentally incapacitated or handicapped?
How do you expect to interact with your partner’s family? Describe.
How do you expect to interact with your partner’s friends (both male and female, old and new)? Would you want your partner to stop interacting with any of his friends that you deemed un-acceptable? Would you allow your partner to interact with friends that you do not like in your home? Would you allow your partner to interact with friends only if you are not involved? Other.
How would you react to hearing or finding out that your partner does not like/approve of one of your friends? Would you tell him/her it’s none of their business and continue the relationship? Would you tell your friend that you can no longer associate with them? Would you ask your partner to get to know your friend better? Would you go to counseling alone? Would you suggest that you and your partner go to couples counseling?
There’s hundreds of other questions that you can ask, but the main subjects to focus on are “family dynamics” and “sex” and “children” and “money” and “equality within the relationship.”