I'm glad you started by saying your taught. The truth is that they're shitty people our there as well as some good me. It is not a guarantee that when you give a certain lady your all, she would reciprocate the gesture. I use to love this certain girl. We dated for 3years and I never cited on her, I gave her my best (although I'm not perfect) fast forward. She opted out of the relationship, no reason, no closure. I later learnt she went off to marry her ex. So my dear, love is a risk.