Actually to be honest, all the উত্তর before me are part of love, but it is also part of attraction to the person. I mean one does get প্রজাপতি and feels nervous around a crush, but that does not mean আপনি would feel the same way when আপনি are in প্রণয় with someone and they are in প্রণয় with আপনি back.
Truth be told, the feeling of being in প্রণয় is different for everyone. The same common feelings like wanting to be with the person always and all that প্রজাপতি are still there, but when আপনি are in love, it all intensifies, beyond what আপনি imagined could ever happen before.
But above all else, being in প্রণয় means putting someone before yourself and also telling yourself that I am worthy of such প্রণয় from this person and I as a person would be able to give that প্রণয় back. It's all about feeling that ability to give and receive as well as to care, sacrifice and respect.
আপনি know you're in প্রণয় when আপনি think about that person all of the time, when you're হৃদয় starts beating faster every-time আপনি see him/her. আপনি want them so badly it makes আপনি want to scream. That's how আপনি know.
You're in love- and I mean it- when আপনি can imagine yourself spending your days at the side of your loved one. When আপনি don't mind making sacrifices, when আপনি know, আপনি know, cause your হৃদয় tells আপনি and your mind agrees.