For context my relationship is perfect. My 23F boyfriend 36M is so so good to me. He is kind to my family and my pets and does everything I could ever ask for to make sure I'm ok. The sex is really good too. For zero reason I can understand a guy I know has become like sooo attractive to me. I have a crush basically but it's stronger then ever before. Bf and I have been together for 2 years and I love him more then anything. The only issue is I just can't stop craving sex with this friend I have (35M). I have sex dreams about him and I wake up thinking about him. I'm also kind of abstractly bummed that I'll likely never sleep with anyone else. I've considered this before but always counted a bond and spiritual connection far more exciting then the alternative. I have found people attractive before but this amount is making me so uncomfortable. When I think about this other it also makes me sick. It makes me feel like I could lose my everything. I would NEVER act on anything that would hurt my boyfriend. And it makes me feel horrible because he would never even think about another woman. I know this to be true. I'm his second girlfriend ever. He doesn't look at other women even if I tell him I think someone's cute. It's making me so sad how can I stop having these thoughts.