As a cis woman who identified as a lesbian in the past and has been in a WONDERFUL relationship with a FTM for the past 4 years.. I don't think ruling out women who identify as lesbians is fair at all because you never know when someone is going to re-evaluate their own identity.. I'm not even sure why labels matter at all..no one can help who they fall in love with..and if you are lucky enough to find love with someone who gets you and tries to understand everything about you and be your best friend then that's pretty amazing.. a label shouldn't classify weither they get a chance or not because you could honestly be passing up your soul-mate. At the end of the day NO relationship is perfect and as years go by people change..everyone changes you never truly stop growing and learning about yourself and the person your with.. its about finding that one person who is willing to grow with you.