bisexual turning lesbian...?


so I've been with guys basically my whole life with being "allowed" to have girlfriends on the side lol litterly no joke. And currently I've been with the same guy for almost 6 years and I like my men don't get me wrong BUT .... I currently have a girlfriend and I think I'm falling for her... And tbh I've felt my pull towards women grow more and more over the years... is it possible to "turn" lesbian after Just being bisexual for so long? And don't judge me but does that mean your not attracted to guys still? Cuz I can still apreciate a good looking man... but I REALLY like my women, and would almost prefure being in a relationship with a woman... any advice would be GREAT ... thanks ladies!