I was under the impression that every romance in SWTOR needs the player to initiate it (with the exception of Aric Jorgan and Corso Riggs who trick female characters into romances) - not the companion. If you're afraid of being tricked into the romance, as Aric and Corso can for female characters, then write to Bioware and make them aware of that dirty little part of those characters.
Just because the male companions are a romance option for you to choose if you wish, does not mean they're going to harass you into submission. Unless maybe it's Corso.
Still doesn't change the fact that I don't want to get harassed about it,