Most Helpful Girl
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For your situation, I would say you should unfollow/unfriend if merely hiding them online is not an option. Because eventually she's going to post something online related to another guy and it's going to spike you in the heart. You need time for yourself to really detach from her emotionally. Maybe consider down the road if you want to her back in your life on some level, but right now it's unbeneficial for you.
Honestly, she sounds like a decent enough girl. She was real with you about what she wanted and didn't lead you on, or go down the road towards a path you and her would have ended up being resentful towards eachother. Good on you for treating the situation respectfully, but it's not your responsibility to stick around, either virtually or physically. You can be cordial in person, but give yourself some space.
I don't say this in a 'screw her" sort of way. But you legitimately do not owe her anything. Don't look at the actions you take from the perspective of what's proper. Just do what's best for you and do so respectfully.1
It’s your choice but the reason you are posting this question is because you likely still have feelings for her.
Cutting someone off from social media can be insulting for many people. But after break ups (either good or bad) it’s for the better. Reason being is sooner or later someone is going to post something that a ex doesn’t want to see. There is going to come a day where you will see her posting and/or tagged with another guy and it’s going to sting.