I get aroused

[Torchwatch]

The problems occur between the changing rooms and the pool in new speedos, and after trying on something new and exciting in a shop and standing at the till, with the suit in your hands, hoping the assistant won't notice.
The beach is ok as you can turn over on your towel if you are lying down or dash into the sea if it is close enough.
Judge your "audience" decide whether they will approve or object to your appearance.
The only long time "cure" is to go to a gay sauna where you could get used to being seen in a state of excitement and not be objected to.