Get out of that. That is not healthy. It sounds like he's stringing you along. The first red flag is that he was cheating on his girlfriend with you which could lead to you having him doing the same to you. You deserve better. Him getting jealous is another huge red flag. Move on hon.

I had a guy do something similar to me. He told me he is not over his ex and that we should just sleep with each other because it's unfair for me if he still thinks about her and he only wants to focus on me and our relationship. One time I got tired of his bulls*it excuses and I didn't reply him on social media when he asked me to come over to his home. You know what he did next? Blocked me the next day and found a new girlfriend 2-3 days after that.

Eventually discuss with him ask him if he really loves that girl or he stays with her out of "pity". Trust me there are guys like that. I was also in a long-distance relationship for 3 years as well.

He might not be decided yet but if he doesn't want to get in a relationship with you and finds excuses please forget him before you suffer.

hi gal, I was in your shoes before. and here's an article that really helped me when I was struggling at the bottom.
I hope it could give you some enlightenment and inspiration like it helped me 

http://back.ly/Ay4dc

wish you have a great future with your loved one.