ADVICE
“How do I get over someone I like after 3 years?”

It’s definitely not easy to get over someone you like. But it’s not impossible. As the saying goes, “time heals all wounds”. Eventually you’ll get over that person, accept what happened and move on.
A good first step is to declutter your room/house. Remove any traces of the person — whether it’s their clothes, pictures, anything they bought or took in that reminds you of them. Revamp the entire room until it looks nothing like it was before.
Second, remove their social media accounts from your friend list and delete any uploaded pictures posted on your profile. If you find it difficult to completely extricate your profile from theirs, then make a new account.
Third, let your friends and social contacts know that you’re not together anymore. There’s a chance they might have already known you’re not together but a face-to-face acknowledgement of your break-up will make it feel more real.
Fourth, focus on rebuilding yourself and your identity. Maybe take up a new hobby. Learn to cook a new dish. Travel abroad and have an adventure.
Learning to accept the loss of a relationship isn’t always an easy process. But you’ll get there. The important thing is to properly flush out any lingering feelings, let go of the past and heal any emotional wounds left unattended.
Once you’ve healed from an old relationship, you’ll become better equipped mentally when you enter a new relationship.