Public declaration of feelings is almost always considered bad manners.
This idea only looks good on a television screen.
Why is this bad?
When you propose to a guy or a girl to enter into a relationship with you, you should create conditions in which the partner would feel as comfortable as possible.
One of these conditions that provides comfort is the opportunity to take a break to think.
You take this opportunity away from a person if you decide to explain yourself in public, because in case of refusal your beloved (beloved) will look cruel, while he or she would like to maintain their image.
In this way, you strengthen your arguments by oppressing the opinions of others, but you could do this with your own strong-willed actions or your own qualities (for example).
What needs to be done
The conclusion is simple - the proposal to take the relationship to the next level should come when you are alone with the object of your affection.
Make it clear that you don't expect an answer right here and now - give the person time to think and don't pressure them.
Earlier we explained why disagreements arise in the family.