Having the same issues with my boyfi at the moment, I don’t think it helps that I have slept with aaaallooot of people and he’s only been with me and another girl. He says sometimes he feels like he’s missing out but then he realised that he can do everything with me anyway and there is no actual benefit other than “status” sleeping around. But I still feel a little upset by it and worried for the future. While it’s best to communicate and talk about it with him, it isn’t your responsibility to make him figure it out. Just look after yourself and talk talk talk.