Scared but loving it

When Janine stirs she automatically starts to scratch her groin, as you do every morning, but then all of a sudden she realises what she is feeling and wakes up completely. She sits up straight and looks around. When she notices you she leaps and produces a scream that sounds strangely not like your own voice, but like when you hear it from a recording.
You see yourself looking totally flabbergasted at yourself and you start to see the funny side of it. You start to laugh, and hear Janine’s alluring laugh coming from your own mouth. This amuses you even more, and you start to laugh uncontrollably.
Finally you see a slow smile coming over your own face now sitting across from you, though it is still looking very confused. You notice you can interpret your own facial expressions much better than you could before, and realise that you don’t only have your girlfriend’s body, but some of her capabilities as well.
Having grown a bit accustomed to the new situation, Janine starts to feel her new body. She starts to caress her torso, now without breasts, but with chest hair. Then she roams down to her muscular stomach and feels her six-pack. From there she starts to caress her penis and you can see it growing with every stroke.
At this you notice something yourself. You are feeling aroused and you feel your panties getting wet. You decide that you have as much right to explore your new body, as Janine has to explore hers, so you start to feel yourself up as well. Wow, that feels really good, you always liked Janine’s gentle fingers running lightly over your own body, seems you like it running over her body as well!! Soon the two of you are getting really aroused, what now?