Listen.

 Actually listening to somebody is the single most important rule you'll ever learn about people -especially women. Listen to what they have to say. All people have dreams, fears, hopes and thoughts. Listening to them will be the greatest gift you can give to anybody, great or small, wise or ignorant, and if you can do that for them, they'll love you in return.

Realize that breaking up is just a normal part of life.

 Yes, breaking up is difficult - but like it or not, this is a normal part of adolescent and adult life, and as much as it's painful, it's also very normal. Sometimes you'll be the "dumper", sometimes you might be the "dumpee". We all experience heartbreak; it hurts – but we all survive it, and you (and your ex) will too.

Stop making excuses for why they didn't call, didn't email you back, made you feel bad, or any other negative way they might have treated you. Don't ever think they are sitting around thinking about you--because, even if you are an incredible person, he/she is probably wrapped up in their own life. If they feel interested in you, they will take the initiative to contact you. Since they are not doing that, it means they are not interested in you.

Sometimes, we become obsessed because we believe that one person we are obsessing over is the only person who will ever love us or we believe they are our "one true love." Never think of anyone in that way--that is only an ideal, not truth. If it didn't work out, then it most likely wasn't meant to be.