I don’t have a sex drive

I’m only 20 but I am married and I just haven’t ever really been the one to approach having sex and I always have to kind of pretend I’m into it for my husband. I think it hurts his feelings I don’t want to and I know it gets frustrating. It’s not that it’s not good I just can’t make myself get horny as naturally as other people. Is their anything I can do? Haha or maybe some advice?