Re: So I kotegaishi'd my girlfriend...
My goode wyffe studied Aikido for six months or so quite a few years back. Recently, she asked me to remind her how to do an yonkyo. I complied and was in the dog house for days. Don't ever do AIkido with loved ones outside of the dojo.
More recently she was on the futon and asked me to help her up. She grabbed both of my wrists and I gently pulled back with my center. All went well until she reached the top, perfectly balanced. For some reason I don't understand and without any help from my brain my palms suddenly turned out and away from me -- sending my goode wyffe across the room. More time in the dog house.
But your situation is a good one. With girl friend out of the picture you'll have more time to devote to practice.