Problems with my boyfriend or ex boyfriend?

I'm in the same position as you ! i'm also 17 and hes 19 , we've been together for 7 months now , and we decided to have sex last weekend , and he lied to me about different things , in the beginning he told me he was a virgin ,he lied . He was my first . I feel as if in I can't trust him , I know I totally understand you ! He needs to show you he really wants to make it work not just by saying it but with actions , you need to feel appreciated and wanted that's the way I want to feel , I suggest you don't give him all your trust and don't make him feel like he has you for sure because that makes him feel like hes in charge !