WHAT DOES THIS mean?

The gut i have been with 6 yrs dumped me out of the blue as he said i was obsessive and jealous.He has a gay best mate, and b4 we finished if he didn't go out with this guy, he would huff with my man and he wouls take it out on me.They disn't speak for 5 days, and my fella was in tears and only perked up when he called.His family are protective of him, and he told them he left me for another woman, but i know for a fact he is spending every night with this guy, and telling them lies.what is the real reasons???