Know what I woud like to see added? A way to tell if someone is following me or not!

So I can see how many people are following me but as far as I know (and I am still learning) I can't see who is following me. This causes me to several times invite people to follow me who already are.
I don't want to be annoying to anyone but at the same time I would hate to miss out on a follow considering how important upvotes etc are here!

Any thoughts from you folks? Is there a way to see at a glance that I am unaware of?