R103, that clip is terribly, terribly sad. Haim seems like a lucid, self-aware, humble young man there, not yet consumed by his own addiction or fame. His ambition and wry sense of humour is very evident--he knew he was very handsome and charming, but had a realism to back it up (substances stole that from him).
Personally, I don't think his sexuality was ever easy to define, or ever got in the way of his acting. It never hit me in the face like a question, as it did when watching Feldman. As for Haim's actual sexuality--after his untimely passing, Feldman saw fit (during promo for his autobiography, 'Coreography') to out his counterpart as bi, and rabidly so.
According to Feldman, since they met at 14/15, Haim behaved in a hyposexual manner, constantly and with multiple partners of either gender. Haim even, allegedly, tried repeatedly to coax his 'best friend' Feldman into sleeping with him (and was turned down every time...). Feldman also hypothesised that Haim's behaviour was a result of sexual abuse his friend suffered around the time of the film 'Lucas' (on which Haim was 13 years old).
So Haim is now thought to be bi, not that it matters much anymore, or can ever be verified.
I'm still leaning toward Feldman as gay. True, he's been divorced twice, fathered a son, and is an acolyte of the Playboy Mansion....but he still idolises Michael Jackson, still wears a ring Haim gave to him, and talks constantly about his friend now passed. He even wrote him a 'love letter' as a memoriam.
The interview below is very sweet, it's with both Coreys, from the 2004 Comic-Con. They talk about making 'The Lost Boys', and Feldman answers a question about crushes on set:
[quote] Audience member: On the set, were you guys flirting with Jamie Gertz [actress]?
Feldman: Oh, no. We were too busy flirting with each other. We didn't have the time. [/]