Two girls that want me, confused

so I dated a girl for 10 months, we broke up 8 months ago... I wasn't a very good boyfriend, was selfish a lot of the time and eventually she broke up with me, I must've tried for 6 months to prove that I Hafez changed and that I'd do anything to have her back, I did all types of romantic gestures... for so long she was all I wanted, we eventually stopped talking after 6 months of my efforts... I gave Uo and decided to move on, because of the way I treated her during the relationship a few family members think she can do a lot better and that we not right for one another... any way I met a girl a month ago and she made me have feelings I didnt realize I could have for someone else... she lives faraway, and I'll see her very rarely but we both willing to put in the work... a few days ago my ex told me she missed me and she wants to try again... I've spent a few dates with her, and all those old feelings r there, but wen I'm with her I think about this other girl, I will always live my ex, she was the best girlfriend I've ever had, but now a huge part of me once to see if things are real with this other girl.. I feel like my ex rejected me so often and was so uncaring when all I did was try afterwards... it's hard for me to think she is the same girl I fell in love with if she was so heartless after we broke up... anyone got any advice? I don't want to hurt either of them and I don't want to make the wrong choice.

Dear SHINJIK...sometimes in life there is no going back. You can love someone and miss them for the rest of your life, but that doesn't mean you have to spend the rest of your life with them. I think you should move on and try and make the most of your new relationship...why would you return to being with someone who doesn't bring out the best in you? Your ex is jealous of your new girlfriend and doesn't like feeling that she has been replaced, that is why she has come back to you, to prove to herself that she is still number one in your heart. Move on, find happiness anew and leave the past where it should be...in the past.