I told my boyfriend this was it?

I told my boyfriend that next time he fuks upp or if I ever figure out hes messn around with someone else that I would would be done with him &&never even.consider him as a friend &&all he said was "i understand that" then I said im dead serious then he says "i get it" does he really care if thats all he said? Sn. Weve been together for almost a yeat, we absolutley love each other &&we have great communixation(: please help tho what do yu think?!