Joan the Vampire Slayer
Carpe Spuffy!
How does Joss protray male-male friendships in his works? Does it feel similar to female-female friendships?
There aren't too many bromances as such in the Whedonverse it seems (correct me if I've missed someone). You never really get a Troy/Abed or JD/Turk type relationship. The closest ones were Gunn/Wes (which ended poorly several times), Andrew/Jonathan (which ended poorly for Jonathan), and Mal/Wash (which never got to fully develop, though War Stories is great).
A lot of the male/male friendships are a combination of gaining respect for the other person through trials and less so on common outside interests. The trio (mostly Andrew/Jonathan) might be the only male-centric relationship that actually became friends out of common interests. The female/female relationships on the shows seemed more frequent, more affectionate, and more centered on actual interests.
And I love Spike/Angel as much as the next guy, but I don't know if that qualifies as "friendship". There are a lot of male/male relationships in the Whedonverse where it felt these dudes were begrudgingly working together (Mal/Simon, Mal/Jayne, Xander/Spike, Giles/Spike).
Also, in shows like Buffy, there simply aren't that many full-time human males. Example: Xander can be friends with anyone, just so long as he isn't a vampire. This severely limits his bromance opportunities. I never got the feeling Riley truly respected him as a fighter and Xander and Giles' relationship is perhaps the least fleshed out of the scoobies. On Angel, I never felt Angel really became great "friends" with any of his male co-workers because he always kept everyone at a distance.
Of course they're friends. They're beyond that, really. Angel taught Spike everything he knows. He calls him his "sire" and "Yoda." They shared a lifetime together. They know each other very well, and deeply care about each other. That's evident in how they push each other's buttons. Spike has saved Angel's life, and Angel has spared Spike's.
Really? I'd argue Doyle and Angel were friends. He was greatly affected by his death.
And what about Wesley? Angel was REALLY hurt by his betrayal, so he must have been pretty invested in the friendship.