There are two passionate sex scenes between Bruce Lee and Linda Lee with a few seconds of Lee teaching students at his martial arts studio in-between. The first is on a bed, and lasts the longest. The second is in a shower, and lasts for a few seconds. Pretty erotic stuff.
In an early scene, Bruce Lee is visited in his room by a young lady. He is in his underwear, he starts kissing her, reaches up her skirt and pulls her panties down. Nothing else occurs.