Could I have done anything?

This girl and I we're together 5 months nearly two years ago and I didn't show her I cared about her and she pursued her current bf and left me.

Fast forward to a month ago and her and the other guy separate awhile back so we start texting again. We hang out one night and she keeps hinting at a relationship but I was just so happy to be there I didn't pick up on any of them. We both bring up old memories and make out/lay in my bed.

She kisses me goodnight at the end but you could feel she wasn't sure if she should because I am bad at sharing how I feel. Her ex comes back in town and she starts stringing me along but texting/snapping me everyday, just not making plans even one night telling me she has to catch up with him with an angry emoji.

Long story short I started to pull away and she noticed, asking me if I was upset which I said yes, just be upfront about not wanting to hang out again. Which she says she's interested but she is embarrassed to tell me they were going to work on things but that I make her happy and she enjoys being around me.

I asked her if I had told her that I wanted to open up and be in a relationship if it would have changed anything and she said it would have changed her decision to go back to her ex. We talked on the phone and I told her how I felt about her and how I fucked up the first time (and this time) she said she needed to see things through with her ex.

Would me being more open that night have done anything?