relationship help? don't know what to do

I split up with a guy in march who I was dating for 7 months he was head over heels for me and everyone else saw it too but because of trust issues I ended it. I tried to get him back at first but because he was hurt he started to get very shitty with me and ended up lying about moving away and other things. He used to say he missed me & wanted me still but at the same time he was and still is trying to talk to other girls to get a reaction out of me. At the start he was against us getting back together and said I will find someone who will love me etc but then acts like he still has interests and didn't want me with someone else. We had contact on & off for the whole on march & April. We don't have each other on social media anymore but we have completely stopped contact for 3 weeks now ( our longest without talking ) i have notice that he's started to look on my social media again this past week. I'm so confused on why hes looking into my social media again. Any help from previous experience ? I do still love him and want to be with him but because of his actions I don't know what he's thinking.