My mans girl friends?? 🥱🤔 Advice?

I told my man i don’t want him being friends with two certain girls. Here’s why. I set boundaries say he can talk to his friends if it isn’t about our issues in OUR relationship. He did, more than once and when he buys me things she makes comments like “you sure she’s not using you?” She works at ulta and we went, she did not even acknowledge me and barely said hi to him but they talked every day on text messages so why act like a stranger now? 🙄🙄and the other girl is what he calls her (and what she called him) “best friend”.. but i seen messages older of course but him saying she’s cute and again older selfies of her in his phone.. that’s just don’t sit right with me. I don’t want him talking to them anymore.. Am i wrong? Am i being petty? If i am, I’ll drop it. He doesn’t see these things as a problem but you know certain men.. 🙂