PLEASE ANSWER THIS, IM MAD ASF

So.... me and my bf of 3 years are trying to work out our relationship, we broke up for 3 months but always saw each other. but this girl gone text him "I'm out the shower" this is the same girl he was hanging out with when we wasn't together and shit and I don't like that shit, I feel like there's no contact, but then again, I feel like I can't really say anything. But yet again, respect???? Where????