Ack -- you have been chasing this person around from one lifetime to the next, trying to dominate and control them -- and here you are in this life, faced with another opportunity to wreak havoc in their life! Why are you so obsessed with dominating them? Why can't you accept them as the free individual that they are?
Well, whatever the answers to those questions might be, the fact remains the same: getting involved again in this lifetime, let's hope that there are plenty of positive, harmonious aspects between you to counteract the negative effects of this one, because they're hard to deal with otherwise. You have the tendency to try to control your lover with oppression or even fear; you might criticize them or communicate your displeasure in some other way, to try to force them to behave in the way that you've decided they should. As your mother might say, that's not a nice way to treat someone! You should both work on accepting each other -- and more importantly, yourselves. Being involved in a relationship that teaches you that something about you is unacceptable can be very depressing and demoralizing. It can make you forget your strength, even forget who you are. So don't let this happen. Stay very conscious of this tendency between you; otherwise, it could just get out of hand.