Let's spice it up! (serious Q)?

I know there are many kind women here, so please be mature and help me out! My boyfriend and I have been dating for a long while, and we need more ideas to spice up our life. We always do same thing every time, please help! We use the same positions, we never do anything else like role playing? (I don't exactly understand that.) Etc etc. Thank you, ideas/advice will be mucho appreciated!