This is classic 12th house synastry. It is the house of hidden, clandestine affairs. That’s why while the attraction is real, instantaneous and strong (Aries Mars-Venus) at least from your side, there is an element of secrecy and taboo attached to it, if not in real life at least in your mind. There is always a sense of something being out of conscious reach regarding things that happen in the 12th house. Whether she is affected by this in the same way or not depends on a lot of factors in her chart but most specifically where this Aries conjunction falls in her chart.