Does this quote show irony, foreshadowing, oxymoron, comic relief or allusion?

forshadowing.. This is hinting that something bad is going to happen with someone name Juliet and "her Romeo". It isn't irony because there is no reason for you not to expect it to happen, not oxymoron, because its not contradicting itself, not comic relief because it isn't funny, and not allusion because it isn't refering to some bible or history.