How to tell if your girlfriend is snapchatting other guys?

I REALLY DISLIKE THESE KINDS OF DISCUSSIONS! IT’S UNACCEPTABLE TO SPY ON OR DISTRUST SOMEONE LIKE THIS. RELATIONSHIPS SHOULD BE BUILT ON TRUST, NOT SUSPICION OR SNOOPING. PLEASE THINK ABOUT HOW HURTFUL AND INVASIVE IT IS TO QUESTION SOMEONE’S LOYALTY BASED ON SNAPCHAT SCORES. THIS KIND OF THINKING IS TOXIC!