My favorite is doing the GF doggy and spraying her back. She prefers on her back, legs in the air, and watching me pull it out and spraying her stomach. She still finds cum streams shooting out of my cock fascinating to watch. When I’m done she likes to give me a total of how many streams came out (dribbling doesn’t count) and also how far the longest one travelled.
IMO nothing beats a facial. It’s so intense that to both be on board for it really adds to the intimacy. And then when you’d blown your load and you’re both kind of there it ends up being a little awkward and silly which, in a very different way, adds to the intimacy—the best sex should be fun!