Hey people of Reddit! 

My girlfriend (Anna) and I have met in university at a party, we ended up hitting it off and that was pretty much the kick start of what I can only describe as the greatest 4 years of my life. She's truly an amazing person, I love her and I can truly see this going into marriage someday.

However, she has a friend (lets call her Sarah) who isn't very fond of me, to this day I have no clue why and I've tried to get her to be on better terms but to no avail, she wont budge. Throughout our relationship Sarah has always tried to set my GF up with a friend of hers or some guy she met off Tinder, Anna has declined these offers and continues to.

Last week Sarah came over for dinner and while I was making some food I overheard Sarah talking to Anna about her recent string of sexcapades with dudes she hooked up with, she made constant remarks about how they were a lot buffer than I was, taller than I was. I go to the gym regularly and while I don't have a rock hard set of abs, I'm fit. Anyhow after that painfully awkward dinner me and Anna went to bed. 

Three days later after that night Anna sat me down and asked me what would happen if she accidentally cheated on me and after a silent stare of anger from me she asked me if she could give the casual hookup lifestyle a try for a while, I was livid and told her to get out immediately. Our sex life is pretty great, we have sex almost everyday and try new things. I am honestly territorial in the sense that I don't want another man in or around her womanly regions.

Since then she's been texting and calling me non stop claiming that it was a joke and that I'm going to have to open up to the idea of other bringing other partners into the bedroom, fuck no.

I truly do love her but I'm no push over, what should I do?
user
GF's friend (Sarah) is trying to convince her to cheat on me with a guy
assistant
Hey people of Reddit! 

My girlfriend (Anna) and I have met in university at a party, we ended up hitting it off and that was pretty much the kick start of what I can only describe as the greatest 4 years of my life. She's truly an amazing person, I love her and I can truly see this going into marriage someday.

However, she has a friend (lets call her Sarah) who isn't very fond of me, to this day I have no clue why and I've tried to get her to be on better terms but to no avail, she wont budge. Throughout our relationship Sarah has always tried to set my GF up with a friend of hers or some guy she met off Tinder, Anna has declined these offers and continues to.

Last week Sarah came over for dinner and while I was making some food I overheard Sarah talking to Anna about her recent string of sexcapades with dudes she hooked up with, she made constant remarks about how they were a lot buffer than I was, taller than I was. I go to the gym regularly and while I don't have a rock hard set of abs, I'm fit. Anyhow after that painfully awkward dinner me and Anna went to bed. 

Three days later after that night Anna sat me down and asked me what would happen if she accidentally cheated on me and after a silent stare of anger from me she asked me if she could give the casual hookup lifestyle a try for a while, I was livid and told her to get out immediately. Our sex life is pretty great, we have sex almost everyday and try new things. I am honestly territorial in the sense that I don't want another man in or around her womanly regions.

Since then she's been texting and calling me non stop claiming that it was a joke and that I'm going to have to open up to the idea of other bringing other partners into the bedroom, fuck no.

I truly do love her but I'm no push over, what should I do?
user
GF's friend is trying to convince her to cheat on me, I don't want another
assistant