Bedrooms and Hallways (1998)

Keith runs a male bonding group, which was meant to be macho fun, but acts as therapist as dreaded-unmanly emotional and even relational problems prove unavoidable. Openly gay Leo is delighted to find hunky, straight Brendan is a closet-bi and becomes his lover. Things risk ending ugly as it turns out Brendan's girlfriend is Leo's school ex and still able to seduce him.