How to lose male attention im tired of it all?

Where ever i go it seems some guy flirts with me. Like yesterday i went to the gym and these to cute guys with mussel kept flirting with me and my boyfriend was there they got into a big argument and i had to walk him out to calm him down. Another example at the pool the life guard was talking to be and showing me his mussels out of no where, and my boyfriend attacked. he is defiantly not the jealous types but every time we go out there is a guy waiting to flirt with me it annoys me. But also he has so much female attention don't even get me started... but i always explain that i have a boyfriend but they don't listen im done i don't care how hot they are i love my Ian i don't need any more else. sorry for my grammar i am from Italy i moved here 3 years ago and still bad at typing.