Its a Sarkney but EVERYONE must go read this fic:
In love, I shall gamble again by Southern Cross. Its smut without being tasteless and sweet without being fluffy, I think it is fast becoming one of the better Alias fics I have ever read and I have read hundreds covering ever pairing possible.
There is also a list of must read Sarkney fics in the opening page of the Sarkney thread.