This guy...

So I've left school and gone to do A-levels. I follow this guy on Instagram who is nearly two years older than me. He used to go to my school and I remember him really well. Anyway he's always liked my photos and so I thought I may aswell be the first and message him. We've been messaging for a while now about a month and a bit. I really like him but I don't know how he feels about me . I've met him once since we started talking but it was at the gym so we didn't get to talk much. As he is 19 he has a job and works everyday until 5 and by the time he comes back he's tired. I want to spend time with him but I don't know if he's the right one or if he's as Intrested in me as I am in him.