Thinking about it more - there have been incidents on a similar theme in the not too distant past at Leeds... One certain well known 'love rat' was having it away with one of the cheerleaders (which his wife found out about) who was seeing one of the other players.
Clearly this wasn't as serious as the Ferres incident as there weren't 2 sets of settled families ripped apart, but I do know there was a fallout between the 'love rat' and the other player and his group of mates. Interestingly in this case, it was the cheerleader who ultimately left the club...
Things happen in life, some blokes simply can't resist and get carried away 'in the moment' when it's available on a plate, regardless of the potential consequences and often against their own principles or normal decision making process - I've known plenty of blokes (myself included) who've done things they shouldn't when a woman is involved, whether that be affairs, one night stands, or big fat ugly munters....
Whilst it's certainly not a good trait, it doesn't mean they can't be a professional sportsman or relied upon in a rugby team environment. Ferres clearly didn't value his friendship with Huby enough to take the time to think about what was happening and resist, but as long as nobody at Leeds is impacted, I don't think the players will be THAT bothered - they'll no doubt have an opinion on Ferres, but that won't affect their professional duty as a Leeds player, but will affect how close they get to know him away from the field.