This relationship could be huge, definitely for you, as it inspires a transformation in you that lasts your whole life; but for your lover as well, because it signifies the breaking of some old, negative karmic bonds from a long-ago past life. You're finally freed to graduate to the next level of your soul's evolution, so celebrate! You two were involved in a past life, and it wasn't a good relationship.
You might have been lovers, but it's more likely that you were adversaries of some kind -- warriors from opposing clans, or something of that nature. Your lover was stronger than you then, and they dominated you ruthlessly. You felt defeated by them, overwhelmed by their power and even broken down by it. In this lifetime you get together to finally put an end to that old Karmic tie that wasn't good for either of you. Instead of dominating you in this life, this person helps you to become who you are. They encourage your freedom on every level, and they let you know that they want to know exactly who you are and what you want in life, and that they're there to help you achieve your goals. In being this way in each other's lives, you help each other to break out of that old, bad pattern and establish a newer, much better and more beneficial one.