'pithy' means brief, forceful, and meaningful in expression.
'condensed' and 'concise' both approximately mean the same thing - which is 'brief' and 'to the point'.
'terse' is also similar in meaning to all of these, but has an implication of anger and offense.
So 'terse' is the best option considering the context of the sentence. 'condensed' and 'concise' do not imply his anger, and pithy means something significant - like a complex idea - said concisely.
The line ¨Thy baited hook shall tangle me no more¨ because fish are beguiled or tricked into biting a hook with glittery lures or bait and that would be what the author is comparing love to
An example of suspense could be Johnny bearing death in chapter 8 after his heroic rescue in the fire with Pony. The greasers are worried for their friend and has the reader questioning whether Johnny will live or not. I can't think of a quote but there is one example.
