How to Find Out Whether or Not Someone Truly Loves You

This post is from someone who asked how to find out when someone truly loves you because this person's last relationship was kind of a long distance relationship and every time they ask someone out, that person always turn them down, so they have turned to me for help on what they should do.
This is the first time I have used names on this blog, but from now on, when I have someone send me in a situation, I am going to give them a name, or really, their situation. So for this person, their name is TrueLove. 
Okay, so for anyone who knows me in person, they know I am such a Disney freak and for this post it's going to come up a lot with true love and how you know. I'm not ashamed of being a Disney freak because I feel like Disney is for everyone and honestly, everyone needs a little magic in their lives.
So to answer TrueLove's question: what should they do?
This may seem like an easy question to answer, but honestly it's not because even if you don't think you're doing anything wrong, you may be doing something wrong and that is a very quick fix if you know what it is and how to fix it.
True love is something that you just know when you feel it no matter if you're doing something wrong or not because if it's truly meant to be both parties will know automatically. It's magical when you find it and absolutely perfect because it's something of a fairytale.
With that being said, true love doesn't always come with young age, but sometimes you have to wait half your life to find your true love. That is the same thing with truly loving someone because you feel it in your heart that it's right and nothing can second guess you.
If you truly love someone and they don't feel the same way, they may just not be the right person for you, so hold out for that perfect fit, your true love because that is the person who will truly love you for you.
If you keep getting rejected, then maybe, you should just not keep asking until you can figure out whether or not they feel sorta the same way about you and you can do that by asking around, but not in a creepy stalker way, but sometimes you'll just have to go middle school on the situation and then those tactics will help you get closer to your true love.