One of the ways I try to keep my love scenes fresh and exciting is to keep a notebook of sexual fantasies and thoughts. Not just my own, but also ideas and experiences my friends share with me, or random ideas from the various media in my life.
I try not to judge or censor any of these, no matter how exotic or fantastical they may be. So I've got jottings about everything from tender heterosexual lovemaking by candlelight to tentacle sex to sex in outer space to.... Well, you get the idea. :)
Once people sense that you won't judge them for sexual thoughts, they can be remarkably forthcoming with ideas. Recently my husband and I struck up a general conversation with a gentleman in a restaurant's lounge . Once he found out I wrote romance, he suggested that the necklace our bartender wore would make a handy cock ring in a story.
Of course I wrote it down! I'm sure I'll use it somewhere.
So if you see me reaching for my purse during a conversation, keep talking!