What do I do?

I’ve been talking to this girl for almost a year now first 6 months we hang out and stuff I never have said anything about how I feel about her then she starts dating her ex again we still continue to talk and keep in touch but slowly was distancing herself from me because she’s spending more time with him. Recently she’s been hanging out with me more and more and I feel like she’s into me as well I’d like to get into a relationship, but I keep getting mixed signals and I would like some advice