Love or friendship?

Homosexuality is extremely frowned upon in South Korea (not as much in Seoul, but everywhere else in the country). So, I've wondered, many times, if the high school boys I see holding hands, or touching each other are really showing their sexual affection for one another, rather than simply acknowledging their friendship! (As I've written before, it's very common for girls to hold girls hands and boys to hold boys hands as a sign of their close friendship) Although, these two were getting pretty close and comfy on the subway last weekend!