I agree with RGBE. The silent treatment is total manipulation and don’t give in to it. My ex used to LOVE to do that to me however we did not live together so it was not responding to texts or calls. It then became a waiting game which she always won because I would break down after a week or two and reach out...
God I wished I could have stayed strong...
Hey man, please don't be hard on yourself for not staying strong. Just treat it as a learning experience.