Have sex. Have dirty, raunchy sex. Have sex in the bed, on the counter, in the car, in the bathroom. Have it everywhere. Have passionate love making sex. Fuck. Go slow. Gaze into their eyes. Learn every curve and bump on their body. Learn what makes them quiver. Learn what makes them cum the hardest. Feel their body and fall back in love with them. Just have sex.
There comes a point in your life when you realize that nothing will ever be the same, and you realize that from now on time will be divided into two parts; before this and after this.