How to make him crazy about me all over again?

Ive been with my bf 2 years now and we both love each other comfortably, but I want to bring back those butterflies or first time jitters. Lately Ive been putting in more effort than him, so what can I do that would spark things up a bit or make him crazy about me all over again. Sweet gestures... distancing myself a little... things in bed? etc.