Mark Long only did a solo in 2012 and returned in 2013 to do hardcore scenes. He is currently an exclusive of Next Door Studios. He has done mostly gay scenes [gallery 01, 02 & 03].
But, he did have a scene with a woman.
If you are one of those guys who loves their gay porn stars to prove their straightness, Mark Long shared on twitter his experience at Phoenix Forum a few days ago that included K I S S I N G a female porn stars (the one he had a sex scene?).