Emotionally abusive relationship help/advice

For the past 2 years I’ve been posting on here when my boyfriend does things to me that cause us to have problems. Pretty much I’ve used glow as timed dated proof of the exact things he’s done and how he’s made me feel because he is emotionally abusive and I won’t even get into the 1,000 reasons why I needed to post to have proof. One reason, as you know emotional abusers make you feel crazy and insane, and always invalidate and undermine your feelings or what really happened. I can’t do it anymore. We’ve been together 3 1/2 years I love him with all my heart. I don’t want to break up, but I am so exhausted. If he wanted therapy I would go but he denies it... how do you leave your long term partner when the love is still there but you know you need to go...