I'm 21 With A Low Sex Drive

I am 21 years old and I just feel like my sex drive has crashed and burned. On top of that, it's hard for my boyfriend (27) to get an erection sometimes and i really think that gets to me more than I like to admit. I worry if it's my body or that he's just not attracted to me anymore. We've only been together a year  and the sex isn't amazing-I've tried talking to him about spicing it up & he seems uninterested- but I love him and want a future with him, is that weird?