Is it sometimes hard to distinguish falling in love and real love?

Two years ago I got out of an rocky relationship. Till this day I still question what on earth was that relationship even about, what I saw in him, what attributes I liked about him. I can't really come up with clear answers except that things happened and falling in love. We had practically nothing in common and if I had stayed longer, my years would've been drained for nothing. So what was all that love declarations for, what was I loving?

I'm now better at distinguishing just falling in love and actually real (mature) love. However, can that still be hard to distinguish?

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Nowadays I don't want to only experience ''butterflies in the stomach'' and strong admiration for someone but actual true love that continues growing even till old age. I want that type of love.
Is it sometimes hard to distinguish falling in love and real love?
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