Yeah agreed with above because sometimes its not the gender attraction its more like person's personality and chemistry that matters if person attract you on all levels then go for it, screw what other people think! 
And if you still don't feel any of it for both then you're probably are "asexual" its new term I learned while ago its when person have no attraction to either genders. And sometimes asexual people don't like being alone but aren't attracted to anyone sexually/physically so they married to person that is ok with platonic type love like just love but no sex or anything physical like kissing, etc just so they're there and aren't alone.
