I found the following a few years back on Google Books. From the Star , Issue 2103, 3 December 1874, Page 3. Text after the text image.
A lady friend has transmitted to us the following “Opinions of the Press” upon the subject of the text which tolls you that Jacob kissed Rachel and lifted up his voice and wept:
If Rachel was a pretty girl, and kept her face clean, we can't see what Jacob had to cry about. —Daily Telegraph.
Weeping is not unfrequently produced by extreme pleasure, joy, happiness; it might have been so in Jacob's case. — Hardwicke's Science Gossip.
The cause of Jacob's weeping was the refusal of Rachel to allow him to kiss her again. — Nonconformist.
It is our opinion that Jacob wept because he had not kissed Rachel before, and he wept for the time he had lost. — The City Press.
The fellow wept because the girl did not kiss him. — Pall Mall Gazette.
Jacob wept because Rachel told him to "do it twice more," and he was afraid to. — Methodist Recorder.
Jacob cried because Rachael threatened to tell her mamma. — Sunday Gazette.
He wept because there was only one Rachel to kiss. — Clerkenwell News.
He wept for joy because it tasted so good. — Jewish Chronicle.
Our own opinion is, that Jacob wept because he found after all "it was not half what it was cracked up to be." — New Zealand Examiner.
A mistake - not his eyes but his mouth watered. — The Ladies' Chronicle.
He thought it was a fast colour, and wept to find the paint come off. — Fine Arts Gazette.
Remembered he was her uncle, and recollected what the Prayer Book says. — Church Journal.
He was a fool and did not know what was good for him. — Englishwoman's Adviser.
He knew there was a time to weep — it had come, and he dare not put it off —Methodist News.
He thought she might have a big brother. — Sporting Chronicle.
Because there was no time for another. — Ladies' Treasury.
When he lifted up his voice he found it heavy, and could not get it so high as he expected. — Musical Notes.
He tried to impose on her feelings because he wanted her to lend him five shillings. — Baptist Guide.
We are confident in our opinion that Jacob wept because Rachel, being cross, slapped his face. — Wilcannia Times
There can be little doubt to a careful interpreter of the text that Jacob was suspected of having kissed Rachel on a previous occasion, and, that being so, Rachel saw a little fellow, who she knew her mother had sent to watch her, peep round the corner just as Jacob was in the act of kissing her. In order, therefore to show the watcher that she was not a party to the transaction, she dealt Jacob a smart slap on the face, and hence he raised his voice. The spy at that moment fled, and Rachel told Jacob that he might prepare for a repetition of the performance, and he accordingly wept for joy. — Tasmanian Tribune.
To make a long story short, Jacob wept, after kissing Rachel, because his impression of the deceitfulness of her sex was more than confirmed by the readiness with which she engaged in "lip service." — New Zealand
As a matter of peshat, the kiss was not derech chibbah, and the crying was at the emotion of encountering a relative. See this parshablog post.