Tom and his anxiety issues

Tom, a 21 years old college student has been dating Katie for a mere week.
While Katie was known for her sexual adventures, Tom was actually a virgin.

In their last date, things heated up as Katie took a brave lead without knowing about Tom's lack of experience.
Tom's anxiety levels quickly overwhelmed him as he was both excited and nervous, nervous to not fulfil his part by giving Katie a good time.
He was worried about his lack of experience and compared himself to all the guys he knew she dated before, how could he compete with that? her standards must have been high enough.
Fearing about going any further with his lack of sexual drive and erection at that moment, as well as destroying his own reputation and chances with the other sex - Tom prematurely ended the date with the excuse of stomach pain.

Sweaty and anxious, Tom walked around the old part of the town in an attempt to ease his mind.
At some point he crossed an old wooden shop with a sign 'Love and Magic', "I could use something like magic right about now.." he said in disdain while entering it, ridiculing himself for even thinking about going in.
Many sex items were on display, it made Tom a little uncomfortable.
Eventually a voice came from over the counter - "Looking for anything particular young man?".
Startled for a second, Tom scanned the source of the voice, an old woman wearing blacks.
"I have problems with my love life, don't mind me.. I'm just trying to clear my head.."
"Well, this shop is here to support people's love life, What do you think you need to make your desires come true?" the woman in black inquired.

After a hearing Tom's story soundly, the old woman finally spoke "Young one, what you need is honesty about your situation in that relationship. I'm sure she will come to understand and ease the pressure off of you.. the rest will be settled on its own".
"Yea well.. its not like I was thinking that any real magic could take place in here.." Tom couldn't hide his disappointed.
The woman in blacks felt belittled and got slightly annoyed "Look here young one, I gave you the best solution.. its best to use magic to enhance positive experiences and not for covering up a faulty..".
"Whatever.." He dismissed her wisdom, "I just know that everything could have worked out if I could perform despite my anxiety..".
"Your body is subject to your own mindset, the only exception is if a different mind is controlling it" She took his remark seriously.
"What? such thing is possible? assuming I believe in such things to begin with.. could you do it??" Tom's helplessness and recklessness couldn't be more vivid.
"Well, there are many rules and complications when it comes to such magic, to begin with - what most would call 'mind' is actually a 'soul', even if such soul existed, it cannot be simply imbued into physical body or object that is already occupied and controlled by one" she explained.
"And what about part of the body that isn't really under direct control.. something like.. my.. penis.." he finally voiced his thought.
"In theory it could work, but why would you go for such lengths when the solution is much more simple? I cannot even count all the possible risks and unknowns, it was never done before and having two souls that share different parts of the same body is not a good idea, who knows what it might lead to? it wont be even reversible without the consent of that new soul" she warned.
"Please, Just do it! I will pay as much as needed" Tom waved his wallet.
She sighed "You young ones are so rush and reckless, fine. It is this shop's purpose to answer to its customers wishes after all. I will begin the ritual during the night in the event I find a soul with affinity to your body and desire".

Tom left the shop to continue his stroll after settling the payment, he didn't expect anything, but the experience did cheer him up a little, he completely overlooked the other customer that followed him in.
Sherry, who was obsessed with Katie, happened to stalk her that fateful day and notice Tom with her.
She ended up following Tom in her quest for knowledge about anything Katie-related, She happened to hear Tom's story and request after following him into the shop.
"What can I do for you young lady" the old woman was aware of Sherry this entire time.
After hearing Sherry's story and requests that included switching places with Tom or just taking over his body or using magic in order to make Katie fall for her, The old woman reminded her of the same thing she noted to Tom - Magic can't be done without consent of those involved.
"Ok then, use my soul for Tom's penis" she shrugged.
The old woman stared at her intently "Do you realize what you're asking for? would you give your own life for such thing?", Sherry silently nodded, "Well, that wish is not against Tom's wish for a soul, he did not condition the source or gender of the soul either..." the old woman kept thinking and thinking while talking to herself - "Uhm mm, I see.. well.. I must warn you my young lady, you will not be the one controlling your soul, it will be given to Tom's penis to do as it sees fit, you will be aware of everything it goes through but no one will ever be aware of you, also.. I will have to erase remains of your existence from any item or memory.. the price for that is the soul you provide.. but please consider it over, there's no guarantee that Tom will end up with Katie for the long term" she warned.

After once again receiving Sherry's consent, the witch began her ritual.
Sherry's last memory was about her consciousness fading away while laying in the middle of a drawn shape in the old woman's back room, time and space lost any meaning as her soul was converted into its new destination.

Hours later, Tom had long forgotten about the old woman as his mind was still troubled by worries about Katie, until he got a text - "Hey, feeling better? Come to my place tomorrow morning.. lets just chill and watch a movie. I miss you! xo xo"
Tom could feel his heart already racing, it was a good chance to take things slow.
He rushed home to get some sleep while texting Katie a positive response.