You may experience...
Early warning system.
A very useful side of being empathic is that you can tell when someone is doing something behind your back, or if something important or serious is happening. I've used this at work a number of times to uncover problems that were potentially damaging to me and to hit them on the head before they could do any harm. To others, it might well seem that I'm incredibly lucky or... psychic!
Energizing people and place.
As well as being a sponge that absorbs psychic pollution, the empath can also be a sender of emotions and energies. If you are able to identify the source of a distress, you can send a stream of positive energy, joy and love to it, and actually change what is happening.
You are more powerful than you may know!
When two empaths get together...
Two empaths together can be a bad combination if both get caught on a spiralling downwards cycle.
For instance, one might pick up their partner being distressed and down. This will distress them, which will in turn cause them to feel even more stressed and down, which will further distress the partner, and so on.
The problem with this cycle is that things might well return back to normal very quickly if they weren't being perpetuated by the other. Having experienced this myself, I often got frustrated that things would go well beyond where they should have because we kept on feeding off each other.
One way to break this cycle is to name it and discuss what is happening. As the tendency is to not discuss what is happening, this can be harder than it seems, especially if you feel that you're on a rapid downhill slide and all you wish to do is curl up and hide away in a hole from the rest of the world.
Worse, you might be afraid to even broach the subject because you fear you've done something really horrible, even though you can't think of anything, and you don't want to find out what it is. In many cases, it's nothing of the sort. It's just our own fear working against us.
Another annoying thing with two high level empaths is that if you are focused on your partner, friend, or whoever, and you take your attention away from them, even if they are on the other side of the world, they will pick up on this instantly. Let me tell you that this is not only no fun, but it is incredibly draining. If both people are empathic, they would do well to be engaged in their own healing, and not be inclined towards drama and a victim disposition.
Being an empath can be quite a challenge. Many don't know they are empaths and many have no clue what to do with such an ability.