Search Results: taking ex back

Bit of a long story here. A year and a half ago, i had a class with a woman that i would be staring at (i would checkout during class and when id start paying attention again i would be looking at her) so i would look away, im sure she caught me staring. I had fallen alseep with fb open on my phone and somehow added people as friends which she added me back only for a couple days later i removed her (will explain). I found out after the semester was over an (now ex) friend was harassing her and that his wife found out.
Now i removed her because i was 24 at the time and she was PSEO (high scool student taking college classes at the college) and was under age at that time. So once i found out she was underage and not wanting drama i removed her.
Now the other day i was having my car worked on and went on fb on my laptop. I saw a message in the others folder that said she wanted to talk to me, calling her by name. But this message was from after the semester. So its a year and 4 months later should i message her or no?

Side note: after finding out he was harassing people i cut ties with everyone who could be a bad influnce so i had good influnces around.