>>3405585For real, most of the condescending replies here are completely clueless. Operating on very little information, people are ready to confidently tell you there's only one right thing to do, or call into question your story and tell you you're deluding yourself. It's ridiculous; these people don't know you, and they aren't interested in understanding.
Ignore them, try and find the photo info out another way; you can try sending it to an iPhone or Google Photos or some other service that organizes photo by date. You could try opening the file's metadata or crack it open in a text file and searching through. Wouldn't surprise me in Facebook scrubs that information, but wouldn't surprise me if they kept it either.
Sorry things sound so tough for you OP. Sometimes the best thing to do is be assertive to her when you need to confront or talk to her, but also to know when to let it lie and choose your battles. Ongoing jealousy can be really taxing for the other person in a relationship, and submitting to constant inquiries about where she is, what she's doing, etc (especially if it comes with requests for photo evidence) often turns people off from the romance. I'm not saying you're doing this, just that it's an opportunity to reflect on how your suspicions (especially if they're wrong!) could be damaging the relationship, and try to strike a balance in your behavior between on one hand needing to know, and reducing the ambiguity, and feeling more confident she is being faithful, and on the other hand being respectful of her privacy and demonstrating you trust her. Showing you trust her is important: by giving her that, she'll be less likely to break it than if you never trusted her to begin with. And it's good for your relationship as a whole.
It sounds like she's probably a good support for you. Try and come to the situation without your mind made up. Think about what you want, and what would make you happy.