[MF]My slutty girlfriend

I am new to writing and this is my first story. The following is a true account of my first experience in being a Cuck and getting off to my girlfriend fucking other guys.

Back story:
I am a male from UK who is 24 years old. I met my girlfriend when I was 20 and she was 17. We met through mutual friends and took a few years to get together officially but had some fun before making it official.

At the point of this story, we had been going out for around 5 months and did not live together. We use to visit each other regularly once a week and at the weekend too. My girlfriend was a very quiet girl who took a while to open up.

We had gotten into a routine where she would visit on a Wednesday and we’d fuck maybe twice over the night then she’d go home. Id then go to hers and we’d fuck all weekend.

As I say, after about 5 months I noticed that our sex took a little dip and it wasn’t happening as often. I asked her about this and she tried to put it down to tiredness or whatever. She then started spending more time on her phone..