3rd wheel

As we speak I am being the third wheel. As of the past week I have been the third wheel. And my heart breaks and aches everytime I see them kiss, and hear them whisper cutely into each others ears. It's like I am invisible. My two best friends are falling in love with each other. Everyday I become the one slowly becoming left out. The one who is chosen second. I can literally feel my heart in my chest. Aching. Being miserable. Why did I let myself get so close to these people. These human beings, my best friends. Why did I let my heart open 100 percent to them and my body become so comforitable around them. Is this all just going to lead to me being crushed to thousands of peices like it has every other time I have let myself out. It's like I opened my heart an soul. And they fell for each other. Looking into each others eyes, every look forgetting me just a smidge more. Forgetting that there is this third person. This person with sensitive feelings. Fighting back the tears and biting my lip as I hear each one confide in me about how much they are falling for the other one. As I sit here and watch their hands clasp into each others, bodies pull closer, and faces get so close you can feel the emotions in the air, I realize I have never had someone who has treated me this way. I have never had someone want to be by my side all the time. Never had someone want to pull me in close and kiss my forehead just because. Someone who looks at me in the eyes with so much feeling. Will that day come for me? I will always be wondering. My eyes are shut so tight, believing that it's not possible. I am in this rut, this rut of unbelief . Is there someone out there who will look at me with their eyes speaking their heart. Will someone see me and fall in love with me, the Kayla that has a heart so big I will do anything for anyone. The Kayla that is fun to be around, and that has emotions like crazy.
Or is this all a fairytale? Was I raised with a fake idea engraved in my mind? Is love like that possible? Or is this all just a conspiracy. Am I blind to the real world and real life. Am I hoping for something that is impossible?
Or is it that two people meet and have things in common. So they persue that and convince themselves that they are meant to be together forever because they grew up thinking that this love was possible. I mean, does that make sense? Do we make up things in our mind, making ourselves think there is some sort of spark there? Or have I just never felt it to understand it?
It makes me wonder. There are millions of people on this planet. How are two people supposed to meet, have things in common, differences, be attracted to each other, and supposedly fall into this thing called love?
My mind is running thousands of miles. I am so curious as to weather or not I will fall into this "love" with anyone. Or if anyone is even fit to "love" me. Or better yet, am I fit to "love" someone else. How would it happen? Is this all just something I have built up in my mind, Will I be crushed and hurt when reality hits and these things are non exaistant.
So many questions. But yet no one to answer: only experience and life can teach me these things.
It's a matter of time, and patience. I need to remember. If this is all real, this true love and soul mates, my time will come. If this is not real, when and how will I be able to accept it.