I have an old friend that I grew up with in Brooklyn that I feel that way about. Different scenario because we've known each other for 25 years though.
Still have love for the dude, but we have nothing in common anymore. He's a grown man now - that still lives with his parents in the projects we grew up in ... when he isn't doing 6, 9, and 18 month bids in Rikers Island for stupid shit!
And when I do see him, it's like old times for the first couple hours reminicing about the same fun shit we ALWAYS do ... then get caught up on recent events - then we have nothing to talk about!
