Here is the tough love you need to hear. You have met someone online, not in person, 3 days ago and you are talking about being in love and how perfect they are. You have not even met them, you haven’t got the slightest bit of actual knowledge about this person and who they really are. For all you know they are a catfish. No sane person falls in love with someone 3 days after meeting online and never in person. If this guy is pushing the same nonsense he’s just love bombing you because he wants to get his dick wet, then he’ll likely bounce. There is nothing of substance here with what your discussed. You are being entirely foolish rushing into things with a total stranger when you yourself have said you aren’t over your ex. Most folks take a break from dating to get their ex out of their system before going back to dating with a level head. You are rushing head over heels hoping for true love, this ain’t that.