I still care about my ex?

Its been 2 months since we broke up. It was a messy breakup but we talked through it a month later and came to good terms. This sounds stupid but I have him on instagram and when I see him like other girls' pictures it still hurts me. Its hurts to know that he got over me so quick and doesn't care about me in the same way while I still struggle and still like him. I think this is taking a toll on my self-esteem, and I keep thinking that maybe I wasn't good enough.

Whats the best way to get through this? I dont want to do this anymore?
I still care about my ex?
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