Reasons why Rachel Berry is bisexual and in love with Quinn Fabray:
She wore a sweater with the colors of the bi flag while singing about getting the attention from both boys and girls. Take me or Leave me is a song from the musical Rent performed by a bisexual female character (it’s a duet with a lesbian and a bi woman, but Rachel performed the part of the bi character)
Even though at first her admiration for Quinn was platonic in a “I wanna look like you” kind of way, it evolved into something more. No straight girl talks that amount of times about how pretty and beautiful other girls are. Rachel literally says Quinn is the prettiest girl she’s ever met and there isn’t a single ounce of jealousy in her tone. Rachel is definitely attracted to Quinn and often looks like she’s pining after her
She asked Finn what it was like to kiss another girl (Quinn)
Even though Rachel has every reason to hate Quinn she never hated her. She even gave her panties to jbi to not divulge Quinn’s pregnancy and she did this for Quinn: Quinn is the one who would lose her reputation, her parents, her popularity and her spot on the Cheerios. Quinn is the one who would be hurted the most if the truth came out, not Finn. Rachel did this to protect her. During the first seasons, we often see Rachel trying to support/help Quinn (another example is when Rachel tries to reach out to Quinn when she was a skank)
Was Rachel in love with Finn ? Yes, he was her first love, but around mid season two and the beginning of season three she started to develop feelings for Quinn too
Rachel seems often sad and defeated when Quinn dates men
She suggested to Finn to get Quinn a gardenia for the prom: the gardenia means secret love, of all the flowers that exist in this world Rachel specifically picks the gardenia. This can’t be a coincidence
The way she looks at Quinn, ma’am just say you’re in love with her and go
In this scene from the pilot she touches Tina’s boobs
She has sexual chemistry with every woman she interacts with, especially with Quinn during the first seasons and Santana during seasons 4-5. Her duets with Santana are often emotionally charged and full of chemistry: in “so emotional” it’s almost like they’re singing to each other and there’s a heavy romantic subtext, in “every breath you take” pezberry look like two exes who had a rough break up, but they still aren’t over each other. This song can be interpreted as “i’m obsessed with you so I’m gonna watch you every step you take” or “I’m so in love with you I always wanna be close to you”. Both keys of reading are valid
She went through Santana’s panty drawer, I don’t need to say more
She’s constantly teased by Santana and other characters about her sexuality, it’s curious that she never denies being gay. It often seems like the show is dropping hints about her attraction to girls