Who is Blake from Rainbow Boys and what is their importance?

Blake is a hot gay guy that attends the Rainbow Youth meetings. When Blake breaks up with his long-term boyfriend, he comes on to Nelson at a party. The two make-out in Blake's car, drunk on rum. Blake tries to have sex with Nelson, but its clear that Nelson is a virgin. Rather than forcing Nelson into something he will regret, Blake tells Nelson to save himself for someone special.