Question: how to know if a guy has someone else?
Answer: He's Less Available. ...  He Mentions Something You Didn't Do With Him. ...  He Gets a Lot of Texts or Calls When You're Together. ...  He Seems to Be Hiding Something. ...  You Catch Him Checking Out Other Women. ...  Plans Happen on His Schedule, Not Yours. ...  He Won't Connect with You on Social Media.