His LL's? I haven't been able to figure that out exactly, as he's a bit too complex to be nailed down to just one or two. It seems like it changes. Sometimes he's all about Acts of Service and Gifts. Gifts have been a big deal, because if I get him the "wrong" thing or if I don't use or enjoy a gift he has given me or seem to enjoy it "enough", then he gets a big resentment over that.
Sometimes, like lately, physical touch and affirmations seem to be the main ones. Most of the major progress lately has been about me doing lots of both, and he starts (slowly) to reciprocate.
Then again, there's what he said about his idea of doing something romantic is to just go do something and hang out together--and I think that can be counted as Quality Time.
I guess I would have to say all five, lol!
One thing I do know for sure is that he's hypersensitive to anything he percieves as being inconsiderate. If I remember to pick him up something special when I am out shopping--that gets me major points. If I make plans and forget to tell him, or don't consult with him about what color to paint a room---he gets quite pissy.