Something used & something new.

My boyfriend is older than me and has much more experience than me. Together for almost a years still feel like I have nothing that I can "call ours" because he's done pretty much everything I can think of with others before we had gotten together and I don't know if I should just get over it and love what we have and feel okay to be bothered by it. Maybe this makes sense to some people but I just need an outsiders opinion.