What do I do

Sometimes I want sex more than my man, actually most of the time. And that makes me feel like he’s not as attracted to me or just super comfortable. We have only been together for shy of two and a half years but we are in college soon to graduate next year. Is he losing love or passion for me? It’s just like he’s comfortable not having sex or even doing like heavier kissing unless I ask. Even hanging out is something I have to initiate most of the time.Is something going on or am I just overthinking. Please help