I have made this comment in several other threads. If you go to a gym with open showers and or a sauna, there are many men looking for the same thing. They are either gay, bi or bi-curious....and all are looking to stroke together......
Sitting in a sauna, just pay attention to the guys who generally just sit naked on their towels and slowly play with their balls and cock.....their cocks may be soft and they just don't start stroking their cocks, but they are letting you know they are interested in stroking. If you respond in a similar manner, that lets him know you are interested. Straight men simple come and go and normally leave if things get going......
Its such a thrill when you find yourself alone in a sauna with another man---a complete stranger---and you both start getting hard and stroking.....feels so liberating and erotic....
From there, as you talk and get to know each other, you may take things to another level.....this has been my experience....in many saunas...