Well, according to the reading i got, he is really deeply hurt from his past, and his deep feelings for the ex is the one causing him unable to move on..
On another note, he actualy left the country for 2 1/2 yrs after he broke up with her and only to finally return this year.. But as we got closer, a lot of things i do or say reminded him of his ex.. Well, i never knew her or him before, so i have absolute no idea how she is etc.. I dont even ask, when he's down he pours his feelings out to me, and i listen.. As time past by, we got more closer, and talks of his ex diminshed.. But suddenly, he used it now when when he couldn't have a commitment.. Well i thought it was an excuse as well, but according to the reading i got, it is genuine.. He still is unable to forget her n the memories.. But she is already married by the way.. And he says no ways in the world he would ever get back with her, but he is still not over her..