Personally, I fell in love for the 1st time when I was 16. We dated for 6 years. Then I chose to leave that relationship behind me. It was painful. I couldn't date anyone for more than 2 years. But I went through it.
Many years later, I fell in love with my hu*****and. But I also "chose" him. I had other choices. He chose me, too. He held out and didn't marry somebody just for the sake of getting married.
I have had a bad boyfriend to whom I was extremely attracted. I am so glad that I finally chose to leave him.
I have also had a very good one. But I was young and stupid. I had no idea how good he was to me until too late. I didn't know how to appreciate people. That was a bad choice and the only choice that I have ever regretted.
As you can see, I fell in love. But I also picked and chose. I made good decisions. And bad ones, too!
It is perfectly O.K. to fall in love. It is perfectly O.K. to fall in love at the 1st sight. It is even perfectly O.K. to fall in love with a wrong person, or a bad guy, at the 1st sight. Go ahead and fall in love with whoever bumps into you. But after all the love and pain, you still have the right to say "no" if that person isn't right for you. You have choices to make. So why not take charge? Do not rely on "碰" for your marriage.