Is she interested? need womans help?

I feel a little desperate asking kn here but I need help...3 yrs ago we met started talkin but she said she did.t like me cus I was immature...we go our separate ways..within these three years I grow fast im 21 .now.recently I add her on facebook she messages me her number but shes in a relationship and I jus got out one..they break up..one day I text her now we texts all day everyday if she goes to sleep n doesn't text me back she texts me back in the morning. If I don't text her back she'll text me again. Our connection is crazy we talk about everything but mostly what we want in a relationship... she randomally tells me what she needs I don't even ask but the things she say are all qualities that I show..shes a cancer im a Scorpio I heard that's the best match idk she even mentioned we should be roomies she could jus want someone to talk to cus she jus got out a relationship.. but im nt sure...we already have a past if having feelings for each other. Everytime I post something that has a little to do with her its like she knows n she likes my status..im confused but I really like her I jus want her to know but I don't wanna do it to soon...so my question is does she like me in return?