How could she have been so foolish as to fall in love with him?
她怎么这么傻，竟爱上了他？
Slowly but surely she started to fall in love with him
虽然过程缓慢，但她无疑开始爱上他了。
She's afraid she's going to be hurt and that she'll never fall in love again
她害怕自己会受到伤害，从而永远不会再恋爱了。
I learned that if you fall in love with something and do it all the time, you will get better at it.
我学到了一点，如果你有了爱好就坚持下去，总会有进步。
Whenever I get into a relationship, I always fall madly in love
我每次谈恋爱都深陷其中，无法自拔。