is it okay for him to enter my life again?

After 1 year and 5 months the screen of my phone popped up again. It was the name that I least expected. Yet it was the first thing I saw in the morning and I couldn't get it out of my head. Just like any other girl, I freaked out and sent a screenshot to my girl gang. We talked in a calm manner but how was I supposed to tell him that I still hadn't moved on?  How was I supposed to say that I did date another guy but I couldn't let him come close to me because it felt like I was betraying him? How was I supposed to tell him that after all this time, that one message again gave me hope? Should have I told him that I still loved him? I succumbed to my tears and yet again I was at the mercy of this thing called love. i cried the night. I cried so hard only to ask myself is this the twist that I am getting as the end of the year approaches? Is it okay for him to enter my life again?