I'm so frustrated right now! My Female Elf was flirting with both Blackwall & Iron Bull since the beginning... I had it in mind that she was ultimately going for Iron Bull because I'd already finished Blackwall's romance (and recently, at that). But the Blackwall romance option came up first, and I made the mistake of entering into a relationship with him. Unbeknownst to me, I couldn't break up with Blackwall for a LONG time (why are you locked in with him for so long?!? You aren't forced to stay with anyone else like this!!) However, I kept flirting with IB when possible, and I finally broke up with Blackwall during his judgment scene.
After the breakup, I did a few missions, then I went to Iron Bull, thinking the romance would trigger. But no... nothing. I think my approval is maxed, because I don't get any more messages when we fight dragons, etc. So basically... he likes me too much to start a relationship with me? Or... he wanted me to stay chaste for him? Is this the "bro code" at work, thus he refuses to date the same girl that his buddy Blackwall dated? What gives!? 
So basically I got locked in with Blackwall for a long time, and then locked out of Iron Bull!?? It doesn't seem fair. I'm pretty sure IB isn't in a relationship with Dorian, since I rarely had Dorian in my party this time, and never got any banter.
....Damn you, Blackwall! You lied to me AND you're the reason why I'll never have another boyfriend!
(btw, I do like Blackwall, but this elven girl seemed more of a match for the Bull *sigh*)
This was my first DA:I playthrough in several weeks, and it'll be the first playthrough I won't be finishing. I dropped my elven Inquisitor off at the Dalish camp in the Exalted Plains, where she's going to live peacefully in Corypheus' new world....
)
I understand that the romances shouldn't make or break my playthroughs, but I was so bummed out by the whole thing, I just decided to quit.