How do I get my boyfriend to forgive me?

I put my foot in my mouth recently when I was talking to my boyfriend and his mom and I said something stupid. Boyfriend has been mad at me since then and I’ve apologised like 5 times. I’ve practically grovelled at this point.

He says he wants to forgive me but can’t because it’s just going to happen again. I do have a tendency to say stupid things or put my foot in my mouth. It’s just me I don’t think before I speak sometimes. I’m not sure what to do at this point it has been a week.

How do I get my boyfriend to forgive me?
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