Hamlet Loves Ophelia

ok I've been itching to ask this question forever!!!
If Hamlet does love Ophelia as he states, then what does the nunnery scene REALLY mean?!

We spent about 3 days rehearsing and reenacting the famous nunnery scene in three of the many ways it could be interpreted
So we had:
-He knows
-He's an oblivious fool
-He figures out half way
But this was all before we knew for sure that he loved Ophelia. So now that we know he loved Ophelia how can we interpret that scene? How would it work out?

-If he knows the whole time then he's just being kind of a bastard to HER but at the same time warning her to go to a safe place? But then the nunnery was also a brothel? That's really what's confusing me.
-If he didn't know anything, then was he just mad at her? because he obviously didn't stop loving her, so that would mean he just wanted to break her heart by calling her a whore. But this approach just sounds very un-Hamlet like. Hamlet wouldn't be this shallow as to take such a blunt jab at her. So would he blame it on his version of maddness?
-Lastly if he figures out halfway as Branagh does[this is what makes most sense to me I suppose] then he is truly mad; at first just really really really pissed off but then he is feigning his insanity as he figures out that he is being spyed upon. Then nunnery also is used both ways. Because of his anger he indirectly calls her a whore to cause her pain as he is feeling, but as he figures it out he wants to warn her and ward her off from danger. This response make the most sense to me mostly because it's not "on the surface" type of response. It's really deep and really Hamlet-like...