It isn't sweet that you know where she's been for the past three weekends because you scrolled through her entire Instagram history. Women don't find it endearing when they're having a conversation and you interject by saying, "Oh yeah, I know. You tweeted it last night." You're a stalker, dude. Let her live her online life. You may think you're appearing interested in what she has to say, but be easy before you get blocked.