You know I missed the word "boys" there on the first read and just got "toys" and the mental image of you taking *cough* toys to a monastary with you. You know the kind of toys I mean. Like the one Sam kept under her pillow while she was stationed on Atlantis - next to the picture of Jack. The one he had to send her more D cells for.
Regarding all this discussion about marital problems in fanfic, I do think an awful lot of whether you think it works are a fanfic story or not is very subjective to whether you think it's in character / canon for them to get to that point. If you're a stickler for strict canon you, probably, won't see it or like it. But that's not to say it's not worth writing because, IMO writing a very good, well, planned and fleshed out stories with a lot of believability on them in general, and an interesting plot, will go a long way to making a story worth reading regrdless of how unlikely it might be (ok, maybe not completely because there's limits but in general there's wiggle room when it's well written) I will just cite The Torment Of Tantalus here (the fanfic not the episode) which has a really rather out of character Sam and both Sam and Jack and even the others acting in ways I would say they just would not but it's a great story and imminently readable regardless of that.
Personally I am a big fan of canon but I don't mind reading AU or slightly out of charcater stuff if it's well written and the purpose of the piece is to explore the "what if" of that scenario. What ifs are good and the meat and bones of fiction IMO. And, face it, in fanfiction you can write whatever the heck you like; that's rather the point of it, actually!
So I would say, if your muse takes you and you want to go ahead and write something which tests the bounds of their relationship, go right ahead and do so.
EDIT: I just thought actually. VSS wrote The Theory Of General Relativity which has a nice bit of relationship angst in the last few chapters. That's done for very believable reasons so worth reading (and generally, worth reading anyway because it's weep inducingly good, but read the prequel - As The World Doesn't Turn). Sorry no links yet as I am at work and I daren't open FF.net or I'll never stop reading.