Role playing, fantasies, costumes,... Sexy outfits can really help you spice up your intimate life between you and your partner! Simply end the boredom with the routine and try something new, something kinky and daring. This helps both, you (it boosts your self-respect because you get complimented and wanted) and your partner, who is charmed by you and your performance.
Why don't you become a sexy Babylonian warrior for the evening / night? Or maybe a Viking, attractive Native American? Give it a shot!