The Unbearable Lightness of Being

I am 43-year-old, middle aged teacher of social studies in a technical college here in Fukuoka, 1.3 million population, centre of sourthern paradise. Besides I'm working in many companies, so my working hours counts up to around 60 hours, oh boy, it's too heavy, of course sometimes I think I can work more, but for myself and for the sake of my loves, I just refrain from working more than stated hours.
I separated my ex-wife 8 years ago. Since then I have been in relation with many women, because I have never said good-by to any of them, I can see 3 or 4 girls always when I want them on demand.
Light, indeed light. ...In my teens, I was unable to talk to any girls for fear I might be ignored, or made light of by them or something. Whole in my twenties, I refrained from having romantic relationship with any women - I led an exactly abstinent life for fear I might lose enough time to read books - virtually I spent 7 years, from 21 years old to 27 years old, I read as many books as possible, in my early twenties, in my domestic language, later in my late twenies, in the language right now I use. I went to the library 9 o'clock in the morning, then I come back home 5 o'clock in the evening. Where I read almost all books the library holds -exaggerating though, I liked to read 'classics'. But anyway, I started working at the age of 27 first in a junior high school, later high school, now technical college.
It was not until I came to 30 when I started coming around to 'club' or 'foreigner's bar'. In my thirties, I married two times, lived together almost all years with someone, I had taken it for granted that I live with someone, but how about now? I have 'several girls to go' but with none of them I am serious.
Light, indeed light. I cannot bear this lightness of being in my life. It might be the same as girls now I have relations with, I know none of them 'love' me seriously, neither did I.
Is the unbearable of lightess of being so common these days America? Here I have lost almost all my affections, but still ' I love, therefore I am'. Only in vain but this emptiness is waiting for me tomorrow again. In reference, see Lena Olin, in the movie.