Sorry to disagree, Flatulent.
No, there is no proven relationship between gravity and electromagnetic fields. They have similar behaviour in that they both appear to obey the inverse square relationship for lield strength. That is where the similarity ends.
Gravitational effects occur between all matter, regardless of the constituent elements - it is not a force, but a distortion in space and time. Electomagnetic attration only exists between elements capable of generating or concentrating magnetic fields - i.e. ferrous materials, conductors carrying current, etc.
What Einstien predicted was the General Theory of Relativity, and that is what was proven by the observation that gravity does bend light. Einstein said that gravity is not a force which pulls on objects; rather it is a curvature of space and time caused by the presence of a nearby body. When an object comes along and moves past the body, it will appear to be pulled towards it, but in reality, it is actually moving along the curved space cause by the gravitational warping of the underlying "space-time" continuum. The relativistic effects that can be observed are such things as red shift of light that appears to an outside observer caused by the apparent decrease in energy of a photon traveling the curved space. The apparent bend in a beam of light is likewise the movement of the beam of light along the warped space caused by the massive gravity of a sun or other large celestial body.