You were curious and as you walked into Monica's parents house asked her more about her abilities.
'So can you stay in a different shape indefinitely?'
'No. But as I get more practiced I have found I can hold forms for longer. It seems like the closer the form is to this body the longer I can hold it. When I first discovered my ability I could only hold the shape for about a minute. Now if I am a woman I can last for hours. Being male is a bit harder. My stint as Graeme is probably the longest I have been male for. I was pretty happy when you suggested I become myself again'
You were silent for a moment. You didn't want to recall what she had been doing in while wearing Graeme's body.
'Have you ever tried being something else? Like an animal? A dog maybe?'
'Yes, I was a cat but that was harder to hold then being male. Last I tried I could only hold that shape for 5 minutes'
'Could you show me I'm really curious'
'Probably not right now. I'm actually pretty tired. It seems I need to recuperate after doing a lot of changes. And I have done a lot of changes today'
You understood. But you did wonder how much of her tiredness was do to all the sex she had experienced.
Monica continued 'How about you come to bed with me and we cuddle and make love just as we are? Sometimes I need to know I am still attractive even in my own body'
'Sure' you replied. She was a very attractive girl. As exhausted as you were yourself your penis was still responding to her suggestion. Her parents were gone and you had the house to yourselves.
10 minutes later you lay exhausted in Monica's bed beside her naked form. She had just demonstrated the Tigrex position for you. Maybe your parents were onto something going through the Kama Sutra.
'That was incredible' you said
'Yeah. It was good for me too. But Simon can I ask you something?'
'Sure Babe'
'In the car you suggested I might have caught a virus when that bat scratched me and that is what changed me into a shape shifter. Were you serious?'
'It's the best explanation I can think of. But I'm no expert on exotic virus's'
'So maybe something in my blood makes me what I am?'
'Perhaps'
'Well if you caught this virus then maybe you could be a shapeshifter as well?'
'Who knows. Maybe you were born with this ability and just didn't find out about it until after you were scratched'
'It would be really nice to know I wasn't the only one like this. Do you love me?'
'Ah... Yes of course I love you' You felt a bit uneasy about where this conversation was going.
'I want to test your theory'
'What do you mean?'
'I want to see if I can turn you into a shapeshifter as well'
'Umm. How do you propose to do that?'
'We exchange blood. I give you my virus'
'But we don't even know if you have a virus. It was just a random thought'
'But it all makes sense. I think that bat gave me a virus that has given me the ability to shapeshift. If I gave you the virus you could gain that ability as well'
'Most likely nothing will happen'
'In that case why not give it a try? You have nothing to lose and a lot to gain'
'I'm not sure. I'm excited by the idea but a bit scared as well. How would you propose to do this?'
'We just prick our fingers and touch them together. Like we are blood sisters. Oh please! Do this for me!'
You were exhausted and couldn't resist your girlfriends pleading 'If it makes you happy' you conceded.
'Oh thanks Simon. Let's do it right away. Stay there. I'll be back in a minute' Still naked she bounded out of bed and out of the room
She was only gone a minute and when she returned she had a needle in her hand. She sat on the bed beside you. You watched as she pricked one of her own fingers then picked up your left hand and stuck the needle into your ring finger. You winced as you felt the needle go in.
She then massaged your finger so a ball of blood emerged. Satisfied she then massaged her own finger so she had an identical drop. She then touched the two fingers together. 'Thankyou so much for doing this Simon. Now we are bonded together forever!' With that she gave you a deep kiss and climbed back into the bed beside you wrapping her arms around you and spooning her body against yours. That was the last thing you could remember as your exhaustion finally took hold.