For a bit of backstory, my ex dumped me by text 14 months ago. Said he missed being single and thought he could get used to spending all his time with someone again but he hadn’t and he didn’t see it changing anytime soon. I strongly suspect this wasn’t solely the reason because I’d put around 2 stone on due to long term steroid use for a chronic condition and was having a particularly bad eczema outbreak so definitely wasn’t looking my best . We haven’t spoken since but we remained “friends” on social media. Yesterday a photo of him and who I presume is his new girlfriend on holiday appeared on my timeline. To be honest it was bit of a gut punch because I’m clearly not over him so I removed him off Facebook, I was already struggling with general updates and I almost certainly couldn’t have coped with new relationship updates etc...
I happened to mention to my friends that I’d removed him and they said I’d been unreasonable in removing him because it’d been so long since the break up and if someone did that to them they’d be really offended and I should be long over it by now.
I’m not bitter about it, I truly hope he’s happy in his new relationship but the end of our relationship broke my heart and my confidence is at zero. Selfishly, It was more for my benefit removing him as opposed to hard feelings because I just want to stop feeling so rubbish in myself about it but now I’m worried I’ve inadvertently offended him or something or hurt his feelings 
This was my first breakup so god knows what the etiquette is for these kinds of situations but needless to say I now feel even more terrible than I did before removing him because now I’m worried I’ve been unreasonable about the whole thing.