I know why I idolize girls

Because I feel alone.
I always have had a tendency on idolizing girls that I met once or very few times, or even just knowing them by sight. The problem is that I am not 15, I am 37.
Sometimes I meet a girl and I imagine getting married with her and having children. It does not make any sense being a person whom I do not anything about her.
So this is not falling in love with someone, I would say this is falling in love with love (companionship, taking care, being loved, having a family, etc) by itself.
Even though I always try to be aware of this, in the end I everytime I mistake loving someone with loving love.

I think this is because I feel alone. I have a very poor social love, with peers who just meet on Saturday nights to meet girls. I need a companionship, people to share my problems and feel supported, people to learn things from life and have a personal development.
So that is why I deeply miss a girls to share my life.
If I had and exciting social life I would not fall in love so quickly.

I have told these peers several times to meet on Sundays, Fridays to take a coffee, to go to the cinema. But they always refuse my proposals.
Night is very superficial and I need to talk about my problems, thoughts, dreams, anxieties, etc. But they are always talking about girls and staring at women.
Thank you in advance.

Not to be harsh, but it sounds like you're making an excuse.

You're basically saying that because I feel alone and I'm not receiving the support that I feel I need, that somehow I'm exempt from rational thought and I'm excused for my behavior. In your mind, you're blaming the people around you while not taking responsibility for your own part in your idolatry of women. Many people feel alone sometimes even in the company of others, including me, but not everyone idolizes women. This tells me that you hold some responsibility in this as well and that you're not doing what you need to do to maintain a proper perspective.