Can I seduce her or just passing time? What do you think?

Hi I proposed a girl a year before and we spoke and after because of some problems we separated.
Recently I gave some roses and a hand-made card for her birthday and we started to speak again. But now she is having a guy from last October.
New situation is she always calling me and texting me and normally we are calling even at 12 am 1 am also. When she is going to meet her guy she is telling me don’t text I’m going to meet him. She agreed to come to my friend’s wedding with me also. Before she refused me when I call her like “babe, baby” but now I always calling her like that and she likes that.
What’s you opinion about this situation?

I always said if relationship have to be secret, you dont have to be in it.

You are doing her favour by giving her attention. She is not putting you in first place and you are there only as much as she want you. If she does this to other guy she will do this to you too if you start dating again.

If you're looking to just mess around, keep doing what you're doing. If you're looking for a relationship, does this girl really seem like the one to start a new relationship with?