concentrate on the emotional aspect of the scene. A love scene should propel the story, not just get the characters off--even when, and maybe especially when, the characters think they're just getting off. If you invent new names for body parts, you'll pull your reader out of the story. If you concentrate on the physical action to the exclusion of the emotional connection, it will be dry and boring. No one likes dry, boring sex.
And let's face it: a great sex/love scene elicits both an emotional and a physical response. You want your reader to want to have sex LIKE THAT. So, if you're bringing anything out of the vanilla ordinary into it, you need to make it relatable and enjoyable even for your vanilla readers, so you need that emotional connection, you need to clearly demonstrate how your character needs this sexual act to be fulfilled in that moment.
Good luck and have fun. Writing sexy scenes can be emotionally exhausting at times, and it is challenging in a different way from other writing, because even if it is absolutely expected in your genre, it needs to be relevant, not gratuitous.