Hullloww ! 
Well, it seems that this post is quite old
, but, there is no reply, so I decided to leave a small message... maybe it helps
. Well, it's not difficult to make new friends in madagascar. People here are very friendly, and if you just dare to make the first step, they will open their doors to you. Even if they dont come to you asking, and that it might be interpreted as hostily, it actually isnt. They don't make the first step because they just dont wanna be rejected...
In reality, they are among the most pacifist people of the indian ocean and all over africa. Another way to make new friends, is, of course, your presence in the youth gathering places, like sportsclub, swimming pool, at the disco, or the cultural center... But well, spontaneous contact is the most genuine. 
Well, I'll end this here if I want it to be useful, because a short message is always more convincing !
I hope it helps,
see you