@Lelleo: If someone is to blame (ie: at fault) for this whole situation, it is definitely the wife for assuming the worst and running off like complete idiot without giving the husband a chance to explain what happened and who that woman was that she saw kissing him. Let's add mutual trust to your list, something the wife obviously did not have at all for her husband, otherwise this whole fiasco would never have happened.
Infidelity is not always about sex. This is clearly a case of emotional infidelity on the part of the wife. Pop "emotional infidelity" into google and the first thing that comes up hits the nail on the head in this case:
An emotional affair can be defined as: "A relationship between a person and someone other than (their) spouse (or lover) that affects the level of intimacy, emotional distance and overall dynamic balance in the marriage. The role of an affair is to create emotional distance in the marriage."
and then there is also:
Basically, emotional affairs occur when one partner is channeling physical or emotional energy, time and attention into someone other than the person they are in a committed relationship with to the point that their partner feels neglected.
It appears to be the general consensus of professionals that, left unhindered, emotional infidelity more often than not leads to physical infidelity, as well. Can you honestly tell me that you believe, if the husband never showed up, the wife would not eventually and willingly have sex with farmer boy?
It is not "just working at the vineyard," as you claim, but flirting (and especially purposely flaunting that flirting in front of her husband), and going on what can only be described as dates with farmer boy. And let's not forget that wedding ring.
And how is it that I'm being "aggressive" by voicing my opinions?