What's the SPOILER that may forever change Kevin and Scotty's relationship?

Note - Please do not reveal the spoiler in your comment header.

In a shocking turn of events, Brothers & Sisters' most functional couple is going to have to deal with infidelity in their relationship. And the perpetrator is not Kevin, but surprisingly, Scotty. From an ABC press release about the episode "An Ideal Husband:"

Everyone in the Walker family is willing to forgive and forget Scotty's infidelity. But when the family all put their best foot forward to help them reunite, things end up in a fist fight. Meanwhile Jack is reinvigorated by being back in the city and starts to pursue new ventures, but Kitty can't seem to picture herself in this new life, and Sarah and Luc share some exciting news with the family, on Brothers & Sisters, Sunday, October 31 (10:01-11:00PM EST), on the ABC Television Network.

This is certain to cause much debate among Kevin and Scotty fans. On the one hand, infidelity is something many couples (gay and straight) have to cope with. Dramas are conflicts and in relationships, this is a pretty tried and true storyline. And it will hopefully provide more screentime for the underused Luke Macfarlane.

On the other hand, there are only a few gay couples on TV, and Kevin and Scotty have been one the most stable and long-lasting so no doubt many folks wil be upset that Scotty has apparently cheated.

What do you think?

So who is "the other man?" The only thing we know so far is that his name is Marcus and he's played by TV and Broadway actor Christopher J. Hanke.

Christopher starred in last year's short-lived medical drama Three Rivers, and has starred on Broadway in Crybaby. On the next page you can see more pics of Christopher as well as a short vid. We don't know how long his character is going to stick around, or if it's just a one-shot deal, but it's clear that the rest of this season is going to be more unexpected than anyone thought.

More pics of Hanke on the next page!