It is relatively easy. I get to be a a-hole in my real life, so playing to good guy is a nice change of pace. In that regard, I have been married 27 years, so I play my trroper as a womanizer, who always chooses the "flirt" option.
I ultimately chose Dorne. Jorgan seems a bit of a loose cannon, doing whatever he feels is best ... and that is my job. Having Dorne as my XO, her strengths compensate for my weaknesses, so we make a good team.
I did not start my relationship with her until after I promoted her ... but either way ... rules are made to be broken. [i roleplay him as a 40ish Trooper ... who was demoted right before the first scene and shipped out to Ord, for sleeping with his former CO's wife.]