I need to know if it is worth my time trying to work on things with my ex boyfriend.

My ex and I have been broken up for about 6 months now. It was a hard breakup because we still loved each other very much but we seemed to be drifting apart. We were together for 3 years. We just started talking again about 4 weeks ago and we decided to try to work things out and fix the problems we had in our past relationship. I'm scared to open up to him again in fear of him deciding against the relationship. I still love him with all my heart but I just don't know what to do.