Thank you everyone for your advice and prayers!
Update: he called me yesterday. He said he got caught up with work then since he didn't hear from me (from my initial text he didn't reply to) he just decided not to. Felt like he was blaming me.
Either way. After small talk. He said it's not fair for me, that I deserve better, that he thinks it's best for it to end. Since work takes up so much of his time.
I am so broken-hearted. Feel like I lost not only my S.O but best friend. All he could say was sorry, that he loves me, but he can't seem to find time for me. Now I'm left here hurt, mad, maybe even hating him for what he did.