My Girlfriend Wont Understand

Im a bisexual man, i've been with my girlfriend for 5 years and we've recently lost the "spark" in the bedroom.
I've decided to start swinging, and experienceing a little man love, i love the way they make me feel, like i really matter, and they make me feel so good.
However, my "better half" is extreamly homophobic, she doesnt care that im swinging, however she is extreamly homophobic wont even look at me any more.
I want her to stop being afraid, she likes men, so surely she can see what i like?