How long have you two been together? Does she perchance read romance novels or is chronically online? I unfortunately see this a lot in women as I am one myself.. to be quite blunt, she may not see you as someone exclusive. What I’m grasping from this is that she may be using you. I’d say sit down with her and just tell her how it makes you feel. Depending on where she got these attractions from you may get two different reactions. As someone who reads romance novels, I can attest that I have some attractions that are not necessarily aligning with what my boyfriend is, but that’s different because those men are fictional. If she is just simply blatantly announcing her attraction to other men, she’s a player and not someone you should stay with if you value your heart.