Talking to a married man..

So this guy I am talking to is legally married, but separated. He was in the army and married for four years. His wife is also in the army and re-enlisted and is now in Germany. He was supposed to join her but she met a man shortly after she arrived there and told him she lost feelings. They tried to work on it for a month or so as he stayed in the states and then they finally broke it off entirely. This was almost six months ago and I guess he has to file on April 6th because that will be their six months of separation. I’m not sure entirely how all of that works but I was just wondering if it’s wrong for me to be talking to someone who is still technically ‘married’. They no longer have contact except to discuss his belongings that need to be shipped back to the states and she’s over in Germany.