Question

In dialogue, you should start a new paragraph every time

Answer 1

Yes you should if it is not the same characters that talk the you should

Answer 2

Hello :)

There are rules to dialogues, the rules are that all lines of a dialogue should be placed in side of quotation marks, The ending punctuation marks should be placed inside of the quotation marks, When a quoted statement is divided, the second part of the quotation is not capitalized, And the last rule is to start a new paragraph when the speaker in a conversation changes.