I only get butterflies in my stomach when looking at the same sex?

[April]

It's only ever happened to me over the same sex so this is making me question my sexuality. However I can only (sorry to be crude) orgasm when thinking about a guy and sex with a guy and never a girl. I like the thought of kissing a girl but nothing more ( i wouldn't even know what to do) but the thought it pleasant but not enough to get me turned on properly if you know what i mean. Sorry I'm just confused how I only have butterflies in my stomach when seeing a girl I fancy but never a guy. What would you label me as when i'm definitely still physically attracted to guys