There are several types of communication between people. Adults. This is 1. Attraction. 2. Business cooperation - business. 3. Romantic relationship. 4. Sex. 5. Marriage. 6. Family. Hence - friendship - any other kind of relationship in which we do not want to admit to ourselves. I think you need to decide what kind of "friendship" you are talking about, then it will be easier to decide where to look.
For friendliness? With a woman? Purely friendly? No sexual overtones? Well then, I can only recommend gay.ru and similar sites where so-called gay men are found. Good luck!