I've noted that no one has yet mentioned romance from a more direct character perspective. I have a character in my own roster who is a "romantic"... a young male who has left his home specifically to, as the saying goes, "sow some wild oats." Though I always RP him as a "gentleman" in his endeavors, never one to force himself on an unwilling female, simply someone who's not shy about showing his interest, or lax in letting his "love interest" know the relationship is simply temporary... a "fling." Of course, he's also not shallow enough to just be seeking one-night stands, so romance is not his only interest or involvement in life.

Heh... a few years ago, on another site, I actually used him in a "Speed Dating" competition, and won "Best RP" and "Most Romantic" awards for my (and my site-chosen partner's) efforts. So yes, romance can be a fun and interesting edition to an RP, if done right.