I
The point of the story is that Paris gave the prize to Aphrodite, not because she bribed him, but because she was beautiful. After all, it was a contest in beauty, though Athena and Hera started a discussion about wisdom and power. It was they who tried to bribe him. They had their merits and they had arguments, but Aphrodite was the thing itself.
Her remark, that he would some day marry Helen, interested him as a divine experiment in prophecy. It might happen or it might not. Very likely the goddess did not mean it as he thought; a wise man, even though he believed the oracle, would always wait and see.
Meanwhile he did wonder what Helen looked like. He needed travel. He might as well visit Sparta as any other place. Cassandra told him not to, but she always did. Œnone warned him, but she was his wife.
When he came to the house of Menelaus, the gatekeeper let him in, and since he was a stranger they wouldn’t ask his name nor his errand till he had had food and rest. Menelaus put off a journey he had thought of, and practised the sacrament of hospitality. But when he found out who it was, he told Paris to make himself free in the house, and after polite excuses went down to Crete, as he had planned.
So they all intended well. But Paris saw Helen, face to face.