Noticed on OLD that men that are cheaters tend to use nicknames instead of their actual names, and that they tend to try to get your phone number or will ask to snapchat quickly after matching you. If you fall for that, and check your old again, you will see he has blocked /deleted you on OLD but I still chatting with you outside of it.

Another thing to pay attention for on OLD is men that use different alphabets to type their name out, when they don't actually speak that language or aren't from that country. One man had his name in Russian with that alphabet, when he was just a white guy that wasn't Russian at all and didn't speak Russian. His name was actually Alex, but yet he had a different name in the different alphabet? Think about it, it makes it harder for a wife or girlfriend to find him if he's using a fake name and moving off the dating app quickly.