Any tips on how can i make my boyfriend love me like it used to be before

Smd
I know it sounds odd.. But there are times i think my bf dont love me now like he used to love me before. We was way sweeter. He is still sweet from time to time but i just miss the way he was before? Does man really change as time goes by? 
As for me, i am still the same to him from day one.
Any tips on how can i make the table go round and for him to be like he used to be? 
Please be kind.. No foul comments.. Im just really getting sad this days..