This app was mentioned in 2 comments, with an average of 1.00 upvote
Well, if it makes you feel any better, I met this girl through reddit last month and next week I'm going to hang out with her. In my case, I started relatively slowly (at first - in reddit - it was clear that I just liked her as a girl), then we got to follow each other on Twitter and next, I got her number. Not sure about you and your obsession, though. Isn't there that app where you could PM someone if you follow each other on Instagram?
edit: typo edit 2: yeap, it's called InstaMessage (android/iOS).