The sky is not oozing passion for Valentine's Day (February 14th). More like...quiet contemplation.
The Moon will be in hot, impulsive Aries, but Mars (Aries' ruler) will have his lust cooled by his transit in watery Pisces. And he won't get carried away with romantic dreams, because he'll be held in check by a trine with Saturn in Scorpio.
This is not so bad, you know. It suggests quiet (Pisces) passion (Mars) with staying power (Saturn). Maybe more spiritual (Pisces) than physical. Saturn in Scorpio trine Mars in Pisces can also suggest the desire (Mars) to be alone (Pisces and Saturn), which is certainly legitimate if the idea of Valentine's Day turns your stomach.
So, if you're celebrating this day with someone special, it will probably be downtempo. There will be depth to it, expressed with meaningful gestures. Don't overlook the meaningful gestures in favour of sugar or bling; the quieter stuff will tell you more. If you're single, or healing from a recent break up, this is soothing energy. Pisces dissolves the pain, while Saturn lends a bit of determination, pushing Mars forward. Alone, but not lonely.