What should I do ?

Hi , I'm a 21 years old virgin and no shame about It . Today a delivery man twice my age came and we chatted for 2 hours and he made clear his interest on me . He made a move that I authorised and told me that he would gladly be my first time and teach me . That I shouldn't take my first time seriously and learn about my body by myself after It . He gave me is number and told me that It was totally fine if I never call him and even if I do I have no obligation to have sex with him and we can just talk about anything . So what should I do ? Should I get rid of my first time with him and learn about sex ? Do It with Someone else ? Or keep It for someone important ?