Can't be bothered to NC.
I was with my ex for about 3 years and we split up 9 years ago. I've been with my DP for 8 years.
Me and ex were only 20 when we split up, both very immature. We both cheated on each other (I found out about him, he never knew about my cheating) and it generally wasn't a happy relationship- I was psycho jealous and he knew just which buttons to press. To be honest a lot of the time he just used to make my skin crawl.
Anyway, I now live 200 miles away from where we lived as kids and where he still lives now. A couple of weeks ago, I was back seeing my mum and I saw him outside Tesco. I was hung over and wearing pyjamas 
and no make-up so I hid. And I did actually properly hide, like between two recycling bins. Then this old woman came and started recycling and I skulked out and she started have a go at me and then walked off to her DH muttering about 'drug addicts behind the bins' . That's a whole other story.
Anyway, this got me interested in what he's doing, what he's up to so I started Facebook, Twitter, LinkedIn and general internet stalking him. At first it was like 'oh that's very interesting' but I've become slightly obsessed and must spend about an hour a day flicking through his photos, reading his blog (his grammar is still as shocking as when we were 18), looking at his mums/aunts/grans Facebook pages. Even though I've seen most of it before- very few updates- I still like having a look.
My best mate can't see the appeal of stalking an ex and said I'm being VU but I just can't help it and told her my obsession will pass. Will it?! AIBU?! Probably. Please tell me you stalk your exes as well.....