Confused and heartbroken

We broke up at the end of July. Soon after I was admitted to hospital for a pretty major heart condition. He messaged me pretty often even after the breakup but nothing romantic, just friendly. Every time he would message me I would feel terrible because I still loved him so I decided to focus on myself and my health and I deactivated my social media for 2 months. I took care of myself and got better physically and emotionally and started doing ok. As soon as I got back onto social media he started liking every post and reacting to my stories and commenting every day. We started talking again little by little about life and what we have been doing and he started sending me voice messages about music and funny things. I haven’t checked his social media at all since August and I rarely initiated contact since I got back on social media. I started thinking maybe he misses me but yesterday he told me out of the blue that he met someone else and wants to see how things go with her. I told him I am happy for him. And I am, but I think that by giving me all that attention he led me on. I sure missed him but I had worked a lot on myself in the past few months and I was starting to feel better but because I started hoping in a reconciliation I am now broken hearted again.