Unfortunately, the Romance article on the Mass Effect Wikia doesn't have the options listed yet, and I'm a little paranoid about digging deeper on google for fear of running into major story spoilers (hell, I'm paranoid about those just on this site).
Who are the romance options (both same-sex and opposite-sex) that count for "Paramour" for male and female Shepards?
In addition, are there "side romances" that you can pursue in ME3? For instance, in 2, you could "romance" Kelly, Samara, or Morinth, but they did not count for the "Paramour" achievement (and one of those options ended very… uh… fatally).
Best Answer
I'm going to keep this to names only in the interest of minimizing spoilers.
Key
#: Only availiable as a continued romance if initiated in Mass Effect 2
^: Same Sex Romance option
%: Not a Squad Member
$: Does not count towards 'Paramour' achievement
All listed relationships except for Diana Allers count for Paramour.
Male Shepard
Ashley
Liara
Tali #
Miranda #%
Steve Cortez ^%
Kaidan ^
Jack #%
Diana Allers %$
Female Shepard
Kaidan
Liara ^
Garrus #
Samantha Traynor ^%
Diana Allers ^%$