My ex contacted me after 7 years, and I don’t know what I should do?

Hey! So years ago, back in 2017, I met this girl, and we began dating. We ended up breaking up in 2018, since the year prior, I was still attached to my previous ex. I sabotaged the relationship I was in, in an attempt to get back with my prior ex. (Which didn’t work out at all) Anyways, she ended up moving, and we haven’t been in contact since 2018. She’s had me added on Facebook, but we never spoke.
Flash to recently, when I’ve been single for a while, I ended up doing a prayer which I don’t do. I’m not really religious. The prayer was practically that I was ready for a relationship.
The following day, or just a few hours before New Years 2024, she called me, and wanted to chat. We’re now talking, but at the same time, I don't know what I should do. It certainly seems like a sign, but at the same time, the past few years have been pretty traumatic relationship-wise, so I’m hesitant. What should I do?
My ex contacted me after 7 years, and I don’t know what I should do?
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