if he couldn't understand your insecurities and be patient with you, then maybe it's for the best.
hope you're ok. i'd try not to think about him too much and try to focus on other things. maybe find a new person who's more understanding and patient with you? and also i wouldn't try not to follow his social media. it'll only bring you pain.
if flying is the issue, maybe try to find someone close by to you? >>51491
also this helps you get over a person. put the list on your fridge and remind yourself each day why he wasn't the one for you. you still clearly have feelings for him and think about him a lot, so maybe focusing on the negatives will help you recover from your heartache.