Love life

So I fell in love on complete accident. In fact I really didn’t want it to happen, so I pushed him away and kept a distance the first two months. but then I realized he wasn’t going anywhere. So I began to do more stuff with him. He met my family and he fit in so well!! We’d go to lunch and late night rides and he still seemed so crazy about me. Then one day it was just completely different. He wouldn’t open my snaps as fast as he usually does but I let it just fly by. Then a month went by and I could just feel him leaving. Just as I had got attached to him. We still talk when we run into each other but it’s just not the same. I honestly don’t know what I should do. I want him so bad but he’s kinda hurt me. Everyone tells me to let him go but he’s all I think about and all I want. Should I try harder or is this just gonna scare him away?