advice please

yesterday, i broke up with my boyfriend of 8 months bc i was no longer happy & in love. or so i thought. i was miserable for a whole day & today i called him, asked to talk, i went over his appartment & we made up. today, i got messages from his wife telling me to tell him to leave her alone, & that she dont want him & that they talked yesterday & he told her that him & i broke up & he was happy bc he was going to do it anyways. (his wife & him are broken up but still legally married bc of all the bills they both got to pay for first) now im all hurt bc we just got back together but now im hearing about how he drunkenly told her some last night while we was broken up...this isnt the first time shes told me he want her back either. we broke up about 6 months ago & it had happened before where she told me he wants her back. & he denies it now & then too. idk what to do😔

also, i addressed the issue, told him im hurt by what he told his ex..& he apologizing to me, telling me he gone make it right, & he never wanna hurt me, he getting a divorce asap....blah blah blah