<human>: Can you give me the gist of the text in a nutshell?

Hi, /r/relationships

So, I just got back on the dating game and has started seeing this girl from Tinder, who shall be named Tinderella.

So, Tinderella and I hit it off quite well. Fun date at movies, and at the shooting range. Anyway, we ended the date on some kissing and a promise to meet again (which is actually later). We've been talking on the phone nonstop since.

A cousin did some research on the girl (without my prompt) and found out that she's still in a relationship with her ex, based on Facebook. 

I recently became friends with her on Facebook but her relationship status is hidden from me. I asked a mutual friend about it (one I didn't bother asking before) and he confirmed that he sees their relationship status as "Tinderella is in a relationship with [her ex]".

Points:

1. Mutual friend says that she's a nice girl who's very sweet and kind and not someone to cheat/lead someone on. 

2. Tinderella was open to me about her ex before and mentioned that she left him because he cheated on her.

3. Her ex still had their couple picture as his display photo but he hasn't updated his photo in months. 

4. At least three of her friends (my cousin's friends, and a mutual friend) can see that they're in a relationship - but, I can't. So, it may have been hidden from me (red flag).

How do I raise the topic to her? Should I even? A part of me thinks that she just doesn't update her Facebook much but then, the fact that it is hidden specifically to me indicates that this might not be the case.

What does reddit think?
<bot>: A girl I'm dating is still in a Facebook relationship with her ex despite claiming they've broken up already. Relationship status is hidden from me. Should I even ask about it? Or just move on and forget about it?