Please help me

Am I supposed to let myself hurt in order to heal from heartbreak or is it okay to shut it out? I don’t want to shut it out and make myself stop crying if that means I’ll relapse but it’s been months and I’m tired of feeling so sad and alone. It hurts so badly and I keep crying and I constantly think about it but sometimes I push the hurt away idk if that’s a good idea. Idek what I’m doing because I’m so confused and sad. He left me for another woman btw. A woman he would talk about a good bit and I didn’t think anything of her. Should I really let myself feel so much pain?