Real love is a feeling.. It's the most beautiful feeling you can ever have, you'll start blindly trusting your partner, you'll neglect all their faults, their presence will be very comforting, once two are in real love there's a high chance that they will live together. Death or separation will definitely leave a mark on one.
Infatuation is, let's say you are a fan of iPhone you purchase the iPhone X, you use it for an year or two after that you'll get fed up of it. You can call infatuation a temporary admiration.