Would it be ok to have a same-sex “partner” without sex?

I’m a girl and I’m in kind of a desperate situation. I have a boyfriend but I recently have fallen hard for a girl. I’m not thinking about leaving him for her but I am left with some questions I might wonder later on.

Assuming she’s also interested, could I leave my boyfriend and have her as my “life partner” with exclusivity and cohabiting but no sex, and, if necessary, no kissing or flirting.

I considered myself bisexual with a very strong preference for women. I know I shouldn’t have sex with women because that’s a sin but I’m not going to feel shame for something I never chose. Anyways, while I do love my boyfriend, the attraction I feel to this girl is incomparable to anything I’ve ever felt with my boyfriend. With him I didn’t even know my heart could actually race like that over another person. I was never thinking about him every night like I do with her.

My sexuality is more than sex – honestly at this point I’m wondering whether I’m a complete lesbian because whatever I felt with my boyfriend even compares to this. It’s overwhelming. And it’s terrifying to think I could love somebody else. I can’t imagine leaving him. But I feel like the cosmos is urging me on to the best decision I will ever make.

She’s also Christian – I think she might also like me that way. I don’t know for sure but she’s always sending me selfies and cute videos and asking to hang out and asking for selfies from me. Since we’re both Christian could we have a relationship where we spend our lives together while staying holy and vowing celibacy?

I dunno, maybe I’m just being an idiot. How could this ever happen? But is it possible?