Can someone help me with this.

You need to personally measure your heart rate, simple count the beats per minute my placing two fingers over a certain point on the under side of your wrist. if you have a apple watch or another smart watch, you can do this more easily.

Explanation:

how to know you're in love with someone you've just started getting to know can be a bit tricky because — feelings aside — they are technically still a stranger to you. although you might feel the urge to dive in and start professing your undying love for them asap, it's important to remember that it can be easy to confuse feelings of immense attraction with actual love.