Hi jmont. It’s great that you’re seeking support in a time of grief.
Just know that what you’re feeling is natural, that most people have gone through this at one stage or another. I went through bad breakups during my early 20s and it felt earth shattering.

I am just so sad

Of course you are sweetie, you’re not just losing your best friend, you’re losing the life you had the last 2 years. Just know that you are grieving and you’re going through a grieving period. You’ve done really well removing him off social media, try your best to not engage in conversations or ask about how hes going through mutual friends – in fact if you can, tell your mutual friends/friends to not talk about him around you. This will help you. Otherwise the wound will take much longer to heal, as each time you hear about him it’ll be like scratching that scab off and the wound will need to reheal.

What helped me was to slowly but surely rebuild my life, piece by piece. My job/career was stable, so I focused on “filling” in the time with other things – seeing friends, exercising, painting. I was also in desperate need to find myself again – so much of my life had been with this one person, and another person before him. So I needed to find out who I was as a person – what I enjoyed, what my values are, what I stood for, what was important to me.

This might feel like it’s too big to handle right now, but all you need to do is take some small steps, and get through each day.