That is David for you , plain and simple . But in all fairness would you actually mind it ? I know i wouldn't but i'm special that way 
Well I feel awkward when there's some sex scene in game.
Mostly because it's an interactive game and it's my character suddenly going all sexy time.
I'm one of the few , I suppose, who likes the fade to black.
I have a great imagination. 
But anyway I'm curious about Dorian sexuality and my future pc being gay , I wonder if there will be option to roleplay about it.I'm not talking about kinky stuff...just normal conversation.
I imagine my pc is going to be a bit shy , and not the type who like to flirt openly.
So I hope there's going to be something else than "hey Dorian by the way , you have a nice ass." *wink*
(Da2 was a bit like that , which can be funny.It worked great for some of my Hawke , but for others it really felt out of character)
I'd actually prefer if Dorian is the first to flirt , but after the whole Anders thing , I don't have my hopes up.