Should i say this to get my ex boyfriend back?

we broke up about 4 days ago, he said he didn’t have feelings for me anymore because after our fight.
it was basically my fault, and i feel terrible because i basically need him more than anything right now.
but should i say this to him?
Spencer, i know you lost feelings but can we atleast try once more & see if you gain your feelings back? i mean, i promise to make everything better. No more stupid fights that i basically start which i’m reallly sorry for. Just being happy. Let’s just try & if you don’t gain them back. then we can really call it quits. but until then would it hurt to try?

That sounds reasonable to me. You might consider starting the conversation with the apology up front…