How do you know when you're in love?

its a very broad question i know... im only 17...and its a tough age as it is, to find someone who makes life worth living. and being gay, makes it even harder to find that person. i know, it sounds ridiculous coming from a teenager.. talking about being in love when their relationship has not been tested by real world, every day struggles.. its just...we have been through infidelity. we have been there for each other when the other was sick. he's been here for me when i needed someone when i was coming out. we cry together. laugh together. think the world of one another. im proud of him. i think he is the most beautiful person i've ever seen. inside and out. i love him for who he is, not whats on the outside. im proud of his accomplishments. his goals. i'd do anything, just to see his dreams come true. we aren't like most teenage couples, when we have a problem.. we take time, sit down, and talk them out. we know what issues are worth arguing over and which are insignificant and need to be settled. no one, and i mean no one, will ever know how much i truly love him... im just dying for someone to recognize true love and not see it as an insignificant teenage relationship. we dont talk about marriage and kids.. we are very realistic when it comes to the reality of our relationship. we both adore one another and would go far distances for each other... its like im meeting him for the first time when i see him each day.. the butterflies in my stomach.. my heart pounding.. my hands get clammy.. ive been with him for a little over 6 months but ive known him for a year..he is such a blessing and i thank god for him each and every day. i have listed just a few things that explain the love i have for my boyfriend... but i'd like some input to... how do know when you're in love...personal experiences are most appreciated =).. thank you!