I’ve been talking to this girl maybe 1-2x a week at a dog park I go to for the past 2-3 months. We have some pretty good conversations and often she goes up to me to initiate conversation whenever we see each other. Last time we were talking for like 2-3 hours and afterwards I asked for her Instagram and she gave it to me before we left. It’s been 2 days now and she still hasn’t accepted my follow request…. Should I be concerned?