Do I (24F) respond back to my ex bf(25M) that broke up with me ?

He broke up with me in the begging of the year and prolong the brake up for months. He knew I wasn’t over him. I couldn’t let go so easily because we were together for a year and a half. He played with my heart for months going back and forth on his word. I was in a dark place for a while until I found ways to make myself happy without him. Realizing it’s not so bad being by myself. I still love him and miss him. He texts me now that he wants me back and was just trying to work on himself for a while. That he loves me and wants to see me again. For months that’s all I’ve wanted…but after a while I gave up and stopped. I feel he’ll leave me again. I’ve been silent for a while with him and it’s been bugging me that I’m not responding. I wish we could be together but idk if I should open that door again to someone who wasn’t wanting me for months and now is back :/