Your biggest tool to know if you’re really in love with her or not. Right after you’re done, wonder:
Do I want to watch a movie with her?
Do I want to text her randomly just to find out how her day has been going?
Do I want to learn more about her?
Am I interested to know what her passion is?
Does it matter ever so slightly if we have anything in common?
Do I want to meet her parents eventually?
Do I want her to meet my parents eventually?
Can I go for long walks to nowhere with her?
Do I want to travel to different parts of the world and experience life together with her?
Do I want to learn her language?
Do I care if she’s seeing other guys?
Does it hurt if she actually doesn’t have any interest in me?
Do I wish that she’d listen to me always?
Can I provide a listening ear and a sturdy shoulder for her?
Do I hope that she’d accept me, flaws and all?
Do I want her to meet my friends and see if they can get along?
Do I wish for those perfect scenarios where she can literally see me at my coolest, my best so I can impress her?
Will she laugh at my stupid jokes?
Can I just please, wonder about a future together?
If you’re mostly answering no, and you lack wonder, then you aren’t in love. You’re not even tempted on a deep level.