Insecure

Hey guys ! So like I met this guy last year 2019 around December and we started dating early January it’s been two months now since we started dating and everything seems to be fine except that he hasn’t deleted his Instagram pictures with his ex gf that had been dating for two years and it’s really bothering me I talked about it with him but 🤷🏾‍♀️ he didn’t remove them what should I do I am scared they might get back since they still friends on Facebook and still follow each other on Instagram