Thank goodness that was sarcasm. o-o
And there were some hints for Riku and Namine in CoM, but even since then Riku has changed and has gone on a journey of self-discovery, and especially since Roxas has come on the scene, I'm pretty sure the chances are zero to none that Riku will fall in love with Namine.
And I don't think Riku will ever be able to connect with somebody that doesn't know about his time in the darkness. He'd feel like he was lying to them and would feel he didn't deserve their friendship. Therefore, I think Riku will heavily lean on Sora and Kairi emotionally (but not romantically) and that will strengthen their friendship.
And while Riku may become more comfortable with other people (i.e Tidus, Wakka, ect.) I on't feel that he'll ever feel comfortable around them, even though he grew up with them, because he's a totally different person now.