I just need advice and other female opinions

Me and boyfriend were going through a lot we weren’t and he’s never hung about any females friends while we were together the ones that I knew about. Now today he texted me saying he missed me and everything then he says don’t get mad but I was chilling with females and then one of the females went to his house he introduced her to his family and he said they never had alone time before that day he also said he was with his male friend and I guess he was texting her and him and his male friend were going to Walmart she asked if she wanted to come and he went and got her. He acted as if him and this girl weren’t really anything he said I’m getting to know her she cool but it’s not like I’d go hang out with her then he goes and does that. He even made kept saying she’s not my friend she’s just cool It’s just annoying Bc he waited until we were in a terrible place to “hang out” then he easily introduced her to his family. I’m honestly annoyed he was telling me he was uninterested and me and turned off while we were going through our thing and he also hung out with other females during this time of our separation I wish I could say everything but some things didn’t add up I caught him in a lie and tried to switch it. I even asked him while we were not talking like have you been with females he lied and said no then today he said yes idk how to feel.