Uhm, I don't think you should :3 I think it's a very cliché plot. Maybe have one or two members bond especially close with the oc, but I advise against having all the members doing so orz
However, perhaps I interpret your question wrong >_< Are you meaning bonding as in romantic relationships, or do you mean friendships or brother-sister bonds? :3 I find that ok, to be honest ^^
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