How do you know you found the one?
You should know by many things they do, and say. Now I do believe in love at first sight, but I also believe you need to know about a person before marrying them, or even saying "I love you". Take time and get to know each other, make sure there is more than just physical chemistry, if it's based on purely physical chemistry it won't last, you need to have that bond. Also its not what is on the outside, but it doesn't hurt to marry someone that is handsome, just saying!
1. You have an Immediate reaction f knowing there the one
You see that one persona do you think to yourself, "Thats the person I want to marry" "Thats the person I wan tot spend the rest of my life with
2. They truly make you happy
They make you get that feeling, the feeling that makes you smile, and blush! Everyone knows that one look.
3. You can be yourself
You don't have to be someone you're not, and they don't expect you to be anyone but who you truly are!
4.They show you they want more than just sex
I think this is one of the biggest reasons, because when you build a relationship you need to know that the person wants to truly be with you. And that you guys actually have something more in common besides sex positions.
5. You can trust them
There needs to be trust, so you know if he goes to the gym that he isn't going to cheat, or that you don't follow him to double check he's really there. Cheating isn't right.
6. You can't imagine your life without them in it
You should feel like it hurts to not have them by your side. When alone you should want to feel like being with them. Or if you can't go a day without telling them something.
These are just some of the things. But never rush into a relationship if you are not ready, and if you don't have feelings for the other person PLEASE DON'T lead them one. It's not right and they may end up getting stronger feelings for you, and then you would end up hurting them. Make sure when they purpose you are ready, if not it is okay. YOU are amazing, and beautiful! Don't except cheating, if he does it once he'll do it again.