1. Why are you still single?
The listener may feel judged or have to prove that there is nothing wrong with them. During the first date, this can make them feel uncomfortable.
2. How much is your salary?
Money is a personal and sensitive matter, especially when the two are not yet close. Asking about income easily makes the other person misunderstand that you are "valualizing" them according to wallets, instead of people.
3. How many people have you been in love with?
The past of love is a private matter. This question can easily make the other person feel like they are being investigated for their love story - no one wants to be so thoroughly examined at first sight.
4. Comparing with ex-lover
Comparing the present person to the old person - whether directly or indirectly - is always against the law. This reduces the value of the person sitting in front of you, and shows that you have not really given up the past.
5. How many children do you want? When will we get married?
These are questions that are too serious and long-term for a first meeting. Even if you mean it seriously, asking this question early will put unnecessary pressure, especially if the other person has not thought about it.
6. Do you have plastic surgery?
Even if you are just curious, this question is easily misunderstood as being scrutinizing and judging their appearance.
The listener may feel unconfident, offended, or think that you are too important about your appearance something that should not be done in any relationship.
