Advice?

There’s a guy I been friends with like 10 years of my life. I’ve always been kinda afraid to date him because my past relationship was a bad experience. He has female friends. Old co workers. Sometimes they come over to his house and hangout etc video games and stuff. I myself don’t have any male friends. I’ve always figured that’s not a good thing to have while being in a relationship etc.. People always say well don’t be in a relationship if you can’t trust anyone. Who trusts someone 100% anyway? Is it bad for him to keep female friends around if we end up in a relationship? Thoughts pls